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Finding the Fourth Proportional to 494,753.20, 742,129.80 and 162,329.20

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Solution

The fourth proportional to 494,753.20, 742,129.80 and 162,329.20 is: 243,493.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,753.20 : 742,129.80 = 162,329.20 : x
  2. Step 2: Convert to fraction form
    494,753.20/742,129.80 = 162,329.20/x
  3. Step 3: Cross multiply
    494,753.20x = 742,129.80 × 162,329.20
  4. Step 4: Simplify right side
    494,753.20x = 120,469,336,730.16
  5. Step 5: Solve for x
    x = 120,469,336,730.16/494,753.20
  6. Step 6: Final answer
    x = 243,493.80

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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.