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Finding the Fourth Proportional to 658,487.80, 987,731.70 and 159,851.80

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Solution

The fourth proportional to 658,487.80, 987,731.70 and 159,851.80 is: 239,777.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,487.80 : 987,731.70 = 159,851.80 : x
  2. Step 2: Convert to fraction form
    658,487.80/987,731.70 = 159,851.80/x
  3. Step 3: Cross multiply
    658,487.80x = 987,731.70 × 159,851.80
  4. Step 4: Simplify right side
    658,487.80x = 157,890,690,162.06
  5. Step 5: Solve for x
    x = 157,890,690,162.06/658,487.80
  6. Step 6: Final answer
    x = 239,777.70

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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.