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Finding the Fourth Proportional to 658,136.54, 987,204.80 and 159,500.54

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Solution

The fourth proportional to 658,136.54, 987,204.80 and 159,500.54 is: 239,250.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,136.54 : 987,204.80 = 159,500.54 : x
  2. Step 2: Convert to fraction form
    658,136.54/987,204.80 = 159,500.54/x
  3. Step 3: Cross multiply
    658,136.54x = 987,204.80 × 159,500.54
  4. Step 4: Simplify right side
    658,136.54x = 157,459,692,957.07
  5. Step 5: Solve for x
    x = 157,459,692,957.07/658,136.54
  6. Step 6: Final answer
    x = 239,250.80

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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.