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Finding the Fourth Proportional to 481,131, 721,564.92 and 267,635.88

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Solution

The fourth proportional to 481,131, 721,564.92 and 267,635.88 is: 401,380.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,131 : 721,564.92 = 267,635.88 : x
  2. Step 2: Convert to fraction form
    481,131/721,564.92 = 267,635.88/x
  3. Step 3: Cross multiply
    481,131x = 721,564.92 × 267,635.88
  4. Step 4: Simplify right side
    481,131x = 193,116,662,341.33
  5. Step 5: Solve for x
    x = 193,116,662,341.33/481,131
  6. Step 6: Final answer
    x = 401,380.63

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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.