Finding the Fourth Proportional to 276,901,807.80, 382,242,157.98 and 172,531,445.88
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Solution
The fourth proportional to 276,901,807.80, 382,242,157.98 and 172,531,445.88 is: 238,166,708.68
Step by Step Solution
- Step 1: Write the proportion equation
276,901,807.80 : 382,242,157.98 = 172,531,445.88 : x - Step 2: Convert to fraction form
276,901,807.80/382,242,157.98 = 172,531,445.88/x - Step 3: Cross multiply
276,901,807.80x = 382,242,157.98 × 172,531,445.88 - Step 4: Simplify right side
276,901,807.80x = 65,948,792,192,580,784 - Step 5: Solve for x
x = 65,948,792,192,580,784/276,901,807.80 - Step 6: Final answer
x = 238,166,708.68
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.