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Finding the Fourth Proportional to 392,309.38, 588,485.13 and 126,049.42

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Solution

The fourth proportional to 392,309.38, 588,485.13 and 126,049.42 is: 189,080.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,309.38 : 588,485.13 = 126,049.42 : x
  2. Step 2: Convert to fraction form
    392,309.38/588,485.13 = 126,049.42/x
  3. Step 3: Cross multiply
    392,309.38x = 588,485.13 × 126,049.42
  4. Step 4: Simplify right side
    392,309.38x = 74,178,209,315.12
  5. Step 5: Solve for x
    x = 74,178,209,315.12/392,309.38
  6. Step 6: Final answer
    x = 189,080.90

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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.