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Finding the Fourth Proportional to 443,449.53, 664,753.49 and 143,719.50

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Solution

The fourth proportional to 443,449.53, 664,753.49 and 143,719.50 is: 215,442.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,449.53 : 664,753.49 = 143,719.50 : x
  2. Step 2: Convert to fraction form
    443,449.53/664,753.49 = 143,719.50/x
  3. Step 3: Cross multiply
    443,449.53x = 664,753.49 × 143,719.50
  4. Step 4: Simplify right side
    443,449.53x = 95,538,038,487.46
  5. Step 5: Solve for x
    x = 95,538,038,487.46/443,449.53
  6. Step 6: Final answer
    x = 215,442.87

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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.