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Finding the Fourth Proportional to 391,500.87, 587,338.69 and 125,277.36

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Solution

The fourth proportional to 391,500.87, 587,338.69 and 125,277.36 is: 187,944.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,500.87 : 587,338.69 = 125,277.36 : x
  2. Step 2: Convert to fraction form
    391,500.87/587,338.69 = 125,277.36/x
  3. Step 3: Cross multiply
    391,500.87x = 587,338.69 × 125,277.36
  4. Step 4: Simplify right side
    391,500.87x = 73,580,239,882.67
  5. Step 5: Solve for x
    x = 73,580,239,882.67/391,500.87
  6. Step 6: Final answer
    x = 187,944.00

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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.