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Finding the Fourth Proportional to 453,963.40, 680,872.20 and 138,346.90

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Solution

The fourth proportional to 453,963.40, 680,872.20 and 138,346.90 is: 207,498.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,963.40 : 680,872.20 = 138,346.90 : x
  2. Step 2: Convert to fraction form
    453,963.40/680,872.20 = 138,346.90/x
  3. Step 3: Cross multiply
    453,963.40x = 680,872.20 × 138,346.90
  4. Step 4: Simplify right side
    453,963.40x = 94,196,558,166.18
  5. Step 5: Solve for x
    x = 94,196,558,166.18/453,963.40
  6. Step 6: Final answer
    x = 207,498.13

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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.