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Finding the Fourth Proportional to 323,902.97, 485,942.72 and 99,258.43

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Solution

The fourth proportional to 323,902.97, 485,942.72 and 99,258.43 is: 148,914.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,902.97 : 485,942.72 = 99,258.43 : x
  2. Step 2: Convert to fraction form
    323,902.97/485,942.72 = 99,258.43/x
  3. Step 3: Cross multiply
    323,902.97x = 485,942.72 × 99,258.43
  4. Step 4: Simplify right side
    323,902.97x = 48,233,910,614.49
  5. Step 5: Solve for x
    x = 48,233,910,614.49/323,902.97
  6. Step 6: Final answer
    x = 148,914.69

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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.