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Finding the Fourth Proportional to 377,543.16, 521,013.24 and 207,781.20

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Solution

The fourth proportional to 377,543.16, 521,013.24 and 207,781.20 is: 286,740.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,543.16 : 521,013.24 = 207,781.20 : x
  2. Step 2: Convert to fraction form
    377,543.16/521,013.24 = 207,781.20/x
  3. Step 3: Cross multiply
    377,543.16x = 521,013.24 × 207,781.20
  4. Step 4: Simplify right side
    377,543.16x = 108,256,756,223.09
  5. Step 5: Solve for x
    x = 108,256,756,223.09/377,543.16
  6. Step 6: Final answer
    x = 286,740.08

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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.