Tanzania is about 4.5 times bigger than Utah.

Utah is approximately 212,751 sq km, while Tanzania is approximately 947,300 sq km, making Tanzania 345% larger than Utah. Meanwhile, the population of Utah is ~2.8 million people (61.1 million more people live in Tanzania).
Tip: This to-scale comparison of Utah vs. Tanzania uses the Mercator projection, which distorts the size of regions near the poles.