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Finding the Fourth Proportional to 339,610.92, 508,956.84 and 129,134.04

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Solution

The fourth proportional to 339,610.92, 508,956.84 and 129,134.04 is: 193,526.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,610.92 : 508,956.84 = 129,134.04 : x
  2. Step 2: Convert to fraction form
    339,610.92/508,956.84 = 129,134.04/x
  3. Step 3: Cross multiply
    339,610.92x = 508,956.84 × 129,134.04
  4. Step 4: Simplify right side
    339,610.92x = 65,723,652,934.83
  5. Step 5: Solve for x
    x = 65,723,652,934.83/339,610.92
  6. Step 6: Final answer
    x = 193,526.32

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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.