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Finding the Fourth Proportional to 425,747.25, 638,620.88 and 173,165.15

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Solution

The fourth proportional to 425,747.25, 638,620.88 and 173,165.15 is: 259,747.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,747.25 : 638,620.88 = 173,165.15 : x
  2. Step 2: Convert to fraction form
    425,747.25/638,620.88 = 173,165.15/x
  3. Step 3: Cross multiply
    425,747.25x = 638,620.88 × 173,165.15
  4. Step 4: Simplify right side
    425,747.25x = 110,586,881,209.06
  5. Step 5: Solve for x
    x = 110,586,881,209.06/425,747.25
  6. Step 6: Final answer
    x = 259,747.73

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Similar ratio
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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.