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Finding the Fourth Proportional to 392,349.52, 588,385.92 and 126,020.08

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Solution

The fourth proportional to 392,349.52, 588,385.92 and 126,020.08 is: 188,985.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,349.52 : 588,385.92 = 126,020.08 : x
  2. Step 2: Convert to fraction form
    392,349.52/588,385.92 = 126,020.08/x
  3. Step 3: Cross multiply
    392,349.52x = 588,385.92 × 126,020.08
  4. Step 4: Simplify right side
    392,349.52x = 74,148,440,709.27
  5. Step 5: Solve for x
    x = 74,148,440,709.27/392,349.52
  6. Step 6: Final answer
    x = 188,985.68

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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.