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Finding the Fourth Proportional to 453,902.28, 680,962.77 and 138,339.78

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Solution

The fourth proportional to 453,902.28, 680,962.77 and 138,339.78 is: 207,543.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,902.28 : 680,962.77 = 138,339.78 : x
  2. Step 2: Convert to fraction form
    453,902.28/680,962.77 = 138,339.78/x
  3. Step 3: Cross multiply
    453,902.28x = 680,962.77 × 138,339.78
  4. Step 4: Simplify right side
    453,902.28x = 94,204,239,789.99
  5. Step 5: Solve for x
    x = 94,204,239,789.99/453,902.28
  6. Step 6: Final answer
    x = 207,543.00

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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.