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Finding the Fourth Proportional to 658,641.20, 987,961.80 and 237,930.80

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Solution

The fourth proportional to 658,641.20, 987,961.80 and 237,930.80 is: 356,896.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,641.20 : 987,961.80 = 237,930.80 : x
  2. Step 2: Convert to fraction form
    658,641.20/987,961.80 = 237,930.80/x
  3. Step 3: Cross multiply
    658,641.20x = 987,961.80 × 237,930.80
  4. Step 4: Simplify right side
    658,641.20x = 235,066,541,443.44
  5. Step 5: Solve for x
    x = 235,066,541,443.44/658,641.20
  6. Step 6: Final answer
    x = 356,896.20

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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.