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Finding the Fourth Proportional to 453,079.72, 679,734.90 and 133,242.92

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Solution

The fourth proportional to 453,079.72, 679,734.90 and 133,242.92 is: 199,898.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,079.72 : 679,734.90 = 133,242.92 : x
  2. Step 2: Convert to fraction form
    453,079.72/679,734.90 = 133,242.92/x
  3. Step 3: Cross multiply
    453,079.72x = 679,734.90 × 133,242.92
  4. Step 4: Simplify right side
    453,079.72x = 90,569,862,901.91
  5. Step 5: Solve for x
    x = 90,569,862,901.91/453,079.72
  6. Step 6: Final answer
    x = 199,898.29

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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.