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Finding the Fourth Proportional to 449,228.31, 619,711.26 and 267,812.42

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Solution

The fourth proportional to 449,228.31, 619,711.26 and 267,812.42 is: 369,447.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,228.31 : 619,711.26 = 267,812.42 : x
  2. Step 2: Convert to fraction form
    449,228.31/619,711.26 = 267,812.42/x
  3. Step 3: Cross multiply
    449,228.31x = 619,711.26 × 267,812.42
  4. Step 4: Simplify right side
    449,228.31x = 165,966,369,143.29
  5. Step 5: Solve for x
    x = 165,966,369,143.29/449,228.31
  6. Step 6: Final answer
    x = 369,447.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.