Papua New Guinea is about 4.3 times bigger than Tennessee.

Tennessee is approximately 106,752 sq km, while Papua New Guinea is approximately 462,840 sq km, making Papua New Guinea 334% larger than Tennessee. Meanwhile, the population of Tennessee is ~6.3 million people (3.2 million more people live in Papua New Guinea).
Tip: This to-scale comparison of Tennessee vs. Papua New Guinea uses the Mercator projection, which distorts the size of regions near the poles.