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Finding the Fourth Proportional to 392,304.85, 588,401.38 and 126,030.91

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Solution

The fourth proportional to 392,304.85, 588,401.38 and 126,030.91 is: 189,028.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,304.85 : 588,401.38 = 126,030.91 : x
  2. Step 2: Convert to fraction form
    392,304.85/588,401.38 = 126,030.91/x
  3. Step 3: Cross multiply
    392,304.85x = 588,401.38 × 126,030.91
  4. Step 4: Simplify right side
    392,304.85x = 74,156,761,366.66
  5. Step 5: Solve for x
    x = 74,156,761,366.66/392,304.85
  6. Step 6: Final answer
    x = 189,028.41

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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.