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Finding the Fourth Proportional to 323,902.80, 485,497.80 and 113,432.40

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Solution

The fourth proportional to 323,902.80, 485,497.80 and 113,432.40 is: 170,023.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,902.80 : 485,497.80 = 113,432.40 : x
  2. Step 2: Convert to fraction form
    323,902.80/485,497.80 = 113,432.40/x
  3. Step 3: Cross multiply
    323,902.80x = 485,497.80 × 113,432.40
  4. Step 4: Simplify right side
    323,902.80x = 55,071,180,648.72
  5. Step 5: Solve for x
    x = 55,071,180,648.72/323,902.80
  6. Step 6: Final answer
    x = 170,023.79

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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.