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Finding the Fourth Proportional to 443,454.53, 665,287.71 and 143,935.97

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Solution

The fourth proportional to 443,454.53, 665,287.71 and 143,935.97 is: 215,938.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,454.53 : 665,287.71 = 143,935.97 : x
  2. Step 2: Convert to fraction form
    443,454.53/665,287.71 = 143,935.97/x
  3. Step 3: Cross multiply
    443,454.53x = 665,287.71 × 143,935.97
  4. Step 4: Simplify right side
    443,454.53x = 95,758,832,991.39
  5. Step 5: Solve for x
    x = 95,758,832,991.39/443,454.53
  6. Step 6: Final answer
    x = 215,938.33

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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.