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Finding the Fourth Proportional to 443,273.88, 665,004.23 and 143,731.11

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Solution

The fourth proportional to 443,273.88, 665,004.23 and 143,731.11 is: 215,626.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,273.88 : 665,004.23 = 143,731.11 : x
  2. Step 2: Convert to fraction form
    443,273.88/665,004.23 = 143,731.11/x
  3. Step 3: Cross multiply
    443,273.88x = 665,004.23 × 143,731.11
  4. Step 4: Simplify right side
    443,273.88x = 95,581,796,132.60
  5. Step 5: Solve for x
    x = 95,581,796,132.60/443,273.88
  6. Step 6: Final answer
    x = 215,626.95

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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.