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Finding the Fourth Proportional to 658,139.73, 987,209.60 and 159,503.73

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Solution

The fourth proportional to 658,139.73, 987,209.60 and 159,503.73 is: 239,255.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,139.73 : 987,209.60 = 159,503.73 : x
  2. Step 2: Convert to fraction form
    658,139.73/987,209.60 = 159,503.73/x
  3. Step 3: Cross multiply
    658,139.73x = 987,209.60 × 159,503.73
  4. Step 4: Simplify right side
    658,139.73x = 157,463,612,694.29
  5. Step 5: Solve for x
    x = 157,463,612,694.29/658,139.73
  6. Step 6: Final answer
    x = 239,255.60

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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.