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Finding the Fourth Proportional to 266,565.79, 399,869.30 and 89,073.42

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Solution

The fourth proportional to 266,565.79, 399,869.30 and 89,073.42 is: 133,617.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,565.79 : 399,869.30 = 89,073.42 : x
  2. Step 2: Convert to fraction form
    266,565.79/399,869.30 = 89,073.42/x
  3. Step 3: Cross multiply
    266,565.79x = 399,869.30 × 89,073.42
  4. Step 4: Simplify right side
    266,565.79x = 35,617,726,104.01
  5. Step 5: Solve for x
    x = 35,617,726,104.01/266,565.79
  6. Step 6: Final answer
    x = 133,617.02

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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.