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Finding the Fourth Proportional to 453,658.50, 680,589.54 and 138,140.28

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Solution

The fourth proportional to 453,658.50, 680,589.54 and 138,140.28 is: 207,241.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,658.50 : 680,589.54 = 138,140.28 : x
  2. Step 2: Convert to fraction form
    453,658.50/680,589.54 = 138,140.28/x
  3. Step 3: Cross multiply
    453,658.50x = 680,589.54 × 138,140.28
  4. Step 4: Simplify right side
    453,658.50x = 94,016,829,620.67
  5. Step 5: Solve for x
    x = 94,016,829,620.67/453,658.50
  6. Step 6: Final answer
    x = 207,241.42

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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.