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Finding the Fourth Proportional to 658,387.20, 987,580.80 and 237,676.80

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Solution

The fourth proportional to 658,387.20, 987,580.80 and 237,676.80 is: 356,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,387.20 : 987,580.80 = 237,676.80 : x
  2. Step 2: Convert to fraction form
    658,387.20/987,580.80 = 237,676.80/x
  3. Step 3: Cross multiply
    658,387.20x = 987,580.80 × 237,676.80
  4. Step 4: Simplify right side
    658,387.20x = 234,725,044,285.44
  5. Step 5: Solve for x
    x = 234,725,044,285.44/658,387.20
  6. Step 6: Final answer
    x = 356,515.20

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Similar ratio
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1.5x scale

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.