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Finding the Fourth Proportional to 392,576.90, 588,865.55 and 126,337.39

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Solution

The fourth proportional to 392,576.90, 588,865.55 and 126,337.39 is: 189,506.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,576.90 : 588,865.55 = 126,337.39 : x
  2. Step 2: Convert to fraction form
    392,576.90/588,865.55 = 126,337.39/x
  3. Step 3: Cross multiply
    392,576.90x = 588,865.55 × 126,337.39
  4. Step 4: Simplify right side
    392,576.90x = 74,395,734,544.06
  5. Step 5: Solve for x
    x = 74,395,734,544.06/392,576.90
  6. Step 6: Final answer
    x = 189,506.15

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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.