Saudi Arabia is 5,717 times larger than Portland, Oregon.
Area: 2,149,690 km2 World Factbook
Population: 27,345,986 (July 2014) World Factbook
Saudi Arabia, officially known as the Kingdom of Saudi Arabia, is the largest Arab state in Western Asia by land area and the second-largest in the Arab world after Algeria. Wikipedia
Area: 376 km2 calculated
Portland is the largest city by population in the U.S. state of Oregon, near the confluence of the Willamette and Columbia rivers. Wikipedia