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Finding the Fourth Proportional to 453,687.27, 680,530.90 and 138,144.17

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Solution

The fourth proportional to 453,687.27, 680,530.90 and 138,144.17 is: 207,216.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,687.27 : 680,530.90 = 138,144.17 : x
  2. Step 2: Convert to fraction form
    453,687.27/680,530.90 = 138,144.17/x
  3. Step 3: Cross multiply
    453,687.27x = 680,530.90 × 138,144.17
  4. Step 4: Simplify right side
    453,687.27x = 94,011,376,339.85
  5. Step 5: Solve for x
    x = 94,011,376,339.85/453,687.27
  6. Step 6: Final answer
    x = 207,216.25

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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.