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Finding the Fourth Proportional to 391,253.84, 586,660.44 and 124,951.76

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Solution

The fourth proportional to 391,253.84, 586,660.44 and 124,951.76 is: 187,357.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,253.84 : 586,660.44 = 124,951.76 : x
  2. Step 2: Convert to fraction form
    391,253.84/586,660.44 = 124,951.76/x
  3. Step 3: Cross multiply
    391,253.84x = 586,660.44 × 124,951.76
  4. Step 4: Simplify right side
    391,253.84x = 73,304,254,500.37
  5. Step 5: Solve for x
    x = 73,304,254,500.37/391,253.84
  6. Step 6: Final answer
    x = 187,357.28

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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.