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Finding the Fourth Proportional to 391,194.16, 586,786.56 and 124,951.12

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Solution

The fourth proportional to 391,194.16, 586,786.56 and 124,951.12 is: 187,425.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,194.16 : 586,786.56 = 124,951.12 : x
  2. Step 2: Convert to fraction form
    391,194.16/586,786.56 = 124,951.12/x
  3. Step 3: Cross multiply
    391,194.16x = 586,786.56 × 124,951.12
  4. Step 4: Simplify right side
    391,194.16x = 73,319,637,872.95
  5. Step 5: Solve for x
    x = 73,319,637,872.95/391,194.16
  6. Step 6: Final answer
    x = 187,425.19

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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.