Home / 453,961.40-680,869.20-138,344.90

Finding the Fourth Proportional to 453,961.40, 680,869.20 and 138,344.90

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Solution

The fourth proportional to 453,961.40, 680,869.20 and 138,344.90 is: 207,495.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,961.40 : 680,869.20 = 138,344.90 : x
  2. Step 2: Convert to fraction form
    453,961.40/680,869.20 = 138,344.90/x
  3. Step 3: Cross multiply
    453,961.40x = 680,869.20 × 138,344.90
  4. Step 4: Simplify right side
    453,961.40x = 94,194,781,387.08
  5. Step 5: Solve for x
    x = 94,194,781,387.08/453,961.40
  6. Step 6: Final answer
    x = 207,495.13

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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.