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Finding the Fourth Proportional to 439,006.67, 658,572.78 and 135,426.47

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Solution

The fourth proportional to 439,006.67, 658,572.78 and 135,426.47 is: 203,159.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,006.67 : 658,572.78 = 135,426.47 : x
  2. Step 2: Convert to fraction form
    439,006.67/658,572.78 = 135,426.47/x
  3. Step 3: Cross multiply
    439,006.67x = 658,572.78 × 135,426.47
  4. Step 4: Simplify right side
    439,006.67x = 89,188,186,833.49
  5. Step 5: Solve for x
    x = 89,188,186,833.49/439,006.67
  6. Step 6: Final answer
    x = 203,159.07

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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.