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Finding the Fourth Proportional to 323,983.38, 485,979.39 and 113,627.46

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Solution

The fourth proportional to 323,983.38, 485,979.39 and 113,627.46 is: 170,442.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,983.38 : 485,979.39 = 113,627.46 : x
  2. Step 2: Convert to fraction form
    323,983.38/485,979.39 = 113,627.46/x
  3. Step 3: Cross multiply
    323,983.38x = 485,979.39 × 113,627.46
  4. Step 4: Simplify right side
    323,983.38x = 55,220,603,698.05
  5. Step 5: Solve for x
    x = 55,220,603,698.05/323,983.38
  6. Step 6: Final answer
    x = 170,442.71

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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.