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Finding the Fourth Proportional to 658,147.88, 987,221.82 and 159,511.88

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Solution

The fourth proportional to 658,147.88, 987,221.82 and 159,511.88 is: 239,267.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,147.88 : 987,221.82 = 159,511.88 : x
  2. Step 2: Convert to fraction form
    658,147.88/987,221.82 = 159,511.88/x
  3. Step 3: Cross multiply
    658,147.88x = 987,221.82 × 159,511.88
  4. Step 4: Simplify right side
    658,147.88x = 157,473,603,549.11
  5. Step 5: Solve for x
    x = 157,473,603,549.11/658,147.88
  6. Step 6: Final answer
    x = 239,267.81

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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.