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Finding the Fourth Proportional to 443,456.22, 665,290.24 and 143,937.66

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Solution

The fourth proportional to 443,456.22, 665,290.24 and 143,937.66 is: 215,940.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,456.22 : 665,290.24 = 143,937.66 : x
  2. Step 2: Convert to fraction form
    443,456.22/665,290.24 = 143,937.66/x
  3. Step 3: Cross multiply
    443,456.22x = 665,290.24 × 143,937.66
  4. Step 4: Simplify right side
    443,456.22x = 95,760,320,006.59
  5. Step 5: Solve for x
    x = 95,760,320,006.59/443,456.22
  6. Step 6: Final answer
    x = 215,940.87

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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.