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Finding the Fourth Proportional to 425,902.94, 638,716.19 and 141,517.11

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Solution

The fourth proportional to 425,902.94, 638,716.19 and 141,517.11 is: 212,229.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,902.94 : 638,716.19 = 141,517.11 : x
  2. Step 2: Convert to fraction form
    425,902.94/638,716.19 = 141,517.11/x
  3. Step 3: Cross multiply
    425,902.94x = 638,716.19 × 141,517.11
  4. Step 4: Simplify right side
    425,902.94x = 90,389,269,672.80
  5. Step 5: Solve for x
    x = 90,389,269,672.80/425,902.94
  6. Step 6: Final answer
    x = 212,229.74

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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.