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Finding the Fourth Proportional to 658,134.28, 987,201.42 and 159,498.28

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Solution

The fourth proportional to 658,134.28, 987,201.42 and 159,498.28 is: 239,247.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,134.28 : 987,201.42 = 159,498.28 : x
  2. Step 2: Convert to fraction form
    658,134.28/987,201.42 = 159,498.28/x
  3. Step 3: Cross multiply
    658,134.28x = 987,201.42 × 159,498.28
  4. Step 4: Simplify right side
    658,134.28x = 157,456,930,036.62
  5. Step 5: Solve for x
    x = 157,456,930,036.62/658,134.28
  6. Step 6: Final answer
    x = 239,247.42

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Double scale
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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.