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Finding the Fourth Proportional to 443,305.29, 665,055.17 and 143,816.16

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Solution

The fourth proportional to 443,305.29, 665,055.17 and 143,816.16 is: 215,755.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,305.29 : 665,055.17 = 143,816.16 : x
  2. Step 2: Convert to fraction form
    443,305.29/665,055.17 = 143,816.16/x
  3. Step 3: Cross multiply
    443,305.29x = 665,055.17 × 143,816.16
  4. Step 4: Simplify right side
    443,305.29x = 95,645,680,737.55
  5. Step 5: Solve for x
    x = 95,645,680,737.55/443,305.29
  6. Step 6: Final answer
    x = 215,755.78

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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.