Bolivia is 5.1 times larger than Guyana.
Area: 1,098,581 km2 World Factbook
Population: 10,631,486 (July 2014) World Factbook
Bolivia, officially known as the Plurinational State of Bolivia, is a landlocked country located in western-central South America. It is bordered by Brazil to the north and east, Paraguay and Argentina to the south, Chile to the southwest, and Peru to the west. Wikipedia
Area: 214,969 km2 World Factbook
Population: 735,554 (July 2014) World Factbook
Guyana, officially the Co-operative Republic of Guyana, is a sovereign state on the northern coast of South America. Although Guyana is part of the Anglophone Caribbean, it is one of the few Caribbean countries that is not an island. Wikipedia