Arlington, Texas is 4.2 times larger than Pompano Beach, Florida.
Area: 265 km2 calculated
Arlington is a city in the U.S. state of Texas, within the Dallas–Fort Worth–Arlington metropolitan area and Tarrant County. According to the U.S. Wikipedia
Area: 63 km2 calculated
Pompano Beach is a city in Broward County, Florida, United States, along the coast of the Atlantic Ocean just to the north of Fort Lauderdale. The nearby Hillsboro Inlet forms part of the Atlantic Intracoastal Waterway. Wikipedia