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Finding the Fourth Proportional to 323,661.56, 485,387.38 and 123,971.32

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Solution

The fourth proportional to 323,661.56, 485,387.38 and 123,971.32 is: 185,916.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,661.56 : 485,387.38 = 123,971.32 : x
  2. Step 2: Convert to fraction form
    323,661.56/485,387.38 = 123,971.32/x
  3. Step 3: Cross multiply
    323,661.56x = 485,387.38 × 123,971.32
  4. Step 4: Simplify right side
    323,661.56x = 60,174,114,209.94
  5. Step 5: Solve for x
    x = 60,174,114,209.94/323,661.56
  6. Step 6: Final answer
    x = 185,916.78

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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.