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Finding the Fourth Proportional to 658,141.61, 987,212.41 and 159,505.61

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Solution

The fourth proportional to 658,141.61, 987,212.41 and 159,505.61 is: 239,258.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,141.61 : 987,212.41 = 159,505.61 : x
  2. Step 2: Convert to fraction form
    658,141.61/987,212.41 = 159,505.61/x
  3. Step 3: Cross multiply
    658,141.61x = 987,212.41 × 159,505.61
  4. Step 4: Simplify right side
    658,141.61x = 157,465,912,321.79
  5. Step 5: Solve for x
    x = 157,465,912,321.79/658,141.61
  6. Step 6: Final answer
    x = 239,258.41

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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.