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Finding the Fourth Proportional to 391,499.52, 587,323.08 and 125,188.53

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Solution

The fourth proportional to 391,499.52, 587,323.08 and 125,188.53 is: 187,806.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,499.52 : 587,323.08 = 125,188.53 : x
  2. Step 2: Convert to fraction form
    391,499.52/587,323.08 = 125,188.53/x
  3. Step 3: Cross multiply
    391,499.52x = 587,323.08 × 125,188.53
  4. Step 4: Simplify right side
    391,499.52x = 73,526,113,020.27
  5. Step 5: Solve for x
    x = 73,526,113,020.27/391,499.52
  6. Step 6: Final answer
    x = 187,806.39

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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.