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Finding the Fourth Proportional to 449,359.72, 674,002.68 and 133,816.64

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Solution

The fourth proportional to 449,359.72, 674,002.68 and 133,816.64 is: 200,713.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,359.72 : 674,002.68 = 133,816.64 : x
  2. Step 2: Convert to fraction form
    449,359.72/674,002.68 = 133,816.64/x
  3. Step 3: Cross multiply
    449,359.72x = 674,002.68 × 133,816.64
  4. Step 4: Simplify right side
    449,359.72x = 90,192,773,988.60
  5. Step 5: Solve for x
    x = 90,192,773,988.60/449,359.72
  6. Step 6: Final answer
    x = 200,713.97

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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.