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Finding the Fourth Proportional to 308,850,691.89, 463,275,646.61 and 78,819,781.71

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Solution

The fourth proportional to 308,850,691.89, 463,275,646.61 and 78,819,781.71 is: 118,229,572.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,850,691.89 : 463,275,646.61 = 78,819,781.71 : x
  2. Step 2: Convert to fraction form
    308,850,691.89/463,275,646.61 = 78,819,781.71/x
  3. Step 3: Cross multiply
    308,850,691.89x = 463,275,646.61 × 78,819,781.71
  4. Step 4: Simplify right side
    308,850,691.89x = 36,515,285,337,359,296
  5. Step 5: Solve for x
    x = 36,515,285,337,359,296/308,850,691.89
  6. Step 6: Final answer
    x = 118,229,572.72

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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.