Finding the Fourth Proportional to 258,560,934.80, 387,841,402.20 and 161,815,053.20
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Solution
The fourth proportional to 258,560,934.80, 387,841,402.20 and 161,815,053.20 is: 242,722,579.80
Step by Step Solution
- Step 1: Write the proportion equation
258,560,934.80 : 387,841,402.20 = 161,815,053.20 : x - Step 2: Convert to fraction form
258,560,934.80/387,841,402.20 = 161,815,053.20/x - Step 3: Cross multiply
258,560,934.80x = 387,841,402.20 × 161,815,053.20 - Step 4: Simplify right side
258,560,934.80x = 62,758,577,130,155,592 - Step 5: Solve for x
x = 62,758,577,130,155,592/258,560,934.80 - Step 6: Final answer
x = 242,722,579.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.