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Finding the Fourth Proportional to 449,060.55, 619,688.13 and 267,678.97

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Solution

The fourth proportional to 449,060.55, 619,688.13 and 267,678.97 is: 369,387.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,060.55 : 619,688.13 = 267,678.97 : x
  2. Step 2: Convert to fraction form
    449,060.55/619,688.13 = 267,678.97/x
  3. Step 3: Cross multiply
    449,060.55x = 619,688.13 × 267,678.97
  4. Step 4: Simplify right side
    449,060.55x = 165,877,480,359.63
  5. Step 5: Solve for x
    x = 165,877,480,359.63/449,060.55
  6. Step 6: Final answer
    x = 369,387.78

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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.