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Finding the Fourth Proportional to 425,727.45, 638,549.71 and 173,023.09

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Solution

The fourth proportional to 425,727.45, 638,549.71 and 173,023.09 is: 259,517.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,727.45 : 638,549.71 = 173,023.09 : x
  2. Step 2: Convert to fraction form
    425,727.45/638,549.71 = 173,023.09/x
  3. Step 3: Cross multiply
    425,727.45x = 638,549.71 × 173,023.09
  4. Step 4: Simplify right side
    425,727.45x = 110,483,843,942.80
  5. Step 5: Solve for x
    x = 110,483,843,942.80/425,727.45
  6. Step 6: Final answer
    x = 259,517.78

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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.