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Finding the Fourth Proportional to 266,781.60, 400,193.46 and 89,289.27

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Solution

The fourth proportional to 266,781.60, 400,193.46 and 89,289.27 is: 133,940.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,781.60 : 400,193.46 = 89,289.27 : x
  2. Step 2: Convert to fraction form
    266,781.60/400,193.46 = 89,289.27/x
  3. Step 3: Cross multiply
    266,781.60x = 400,193.46 × 89,289.27
  4. Step 4: Simplify right side
    266,781.60x = 35,732,981,902.17
  5. Step 5: Solve for x
    x = 35,732,981,902.17/266,781.60
  6. Step 6: Final answer
    x = 133,940.95

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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.