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Finding the Fourth Proportional to 394,689.17, 592,106.76 and 124,885.21

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Solution

The fourth proportional to 394,689.17, 592,106.76 and 124,885.21 is: 187,350.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,689.17 : 592,106.76 = 124,885.21 : x
  2. Step 2: Convert to fraction form
    394,689.17/592,106.76 = 124,885.21/x
  3. Step 3: Cross multiply
    394,689.17x = 592,106.76 × 124,885.21
  4. Step 4: Simplify right side
    394,689.17x = 73,945,375,584.75
  5. Step 5: Solve for x
    x = 73,945,375,584.75/394,689.17
  6. Step 6: Final answer
    x = 187,350.91

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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.