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Finding the Fourth Proportional to 342,387.60, 513,542.52 and 132,007.92

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Solution

The fourth proportional to 342,387.60, 513,542.52 and 132,007.92 is: 197,996.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,387.60 : 513,542.52 = 132,007.92 : x
  2. Step 2: Convert to fraction form
    342,387.60/513,542.52 = 132,007.92/x
  3. Step 3: Cross multiply
    342,387.60x = 513,542.52 × 132,007.92
  4. Step 4: Simplify right side
    342,387.60x = 67,791,679,896.76
  5. Step 5: Solve for x
    x = 67,791,679,896.76/342,387.60
  6. Step 6: Final answer
    x = 197,996.89

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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.