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Finding the Fourth Proportional to 425,902.73, 638,715.80 and 141,516.92

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Solution

The fourth proportional to 425,902.73, 638,715.80 and 141,516.92 is: 212,229.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,902.73 : 638,715.80 = 141,516.92 : x
  2. Step 2: Convert to fraction form
    425,902.73/638,715.80 = 141,516.92/x
  3. Step 3: Cross multiply
    425,902.73x = 638,715.80 × 141,516.92
  4. Step 4: Simplify right side
    425,902.73x = 90,389,093,925.89
  5. Step 5: Solve for x
    x = 90,389,093,925.89/425,902.73
  6. Step 6: Final answer
    x = 212,229.43

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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.