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Finding the Fourth Proportional to 266,325.26, 399,489.39 and 88,831.78

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Solution

The fourth proportional to 266,325.26, 399,489.39 and 88,831.78 is: 133,248.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,325.26 : 399,489.39 = 88,831.78 : x
  2. Step 2: Convert to fraction form
    266,325.26/399,489.39 = 88,831.78/x
  3. Step 3: Cross multiply
    266,325.26x = 399,489.39 × 88,831.78
  4. Step 4: Simplify right side
    266,325.26x = 35,487,352,606.09
  5. Step 5: Solve for x
    x = 35,487,352,606.09/266,325.26
  6. Step 6: Final answer
    x = 133,248.17

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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.