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Finding the Fourth Proportional to 323,815.65, 485,720.24 and 181,660.65

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Solution

The fourth proportional to 323,815.65, 485,720.24 and 181,660.65 is: 272,489.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,815.65 : 485,720.24 = 181,660.65 : x
  2. Step 2: Convert to fraction form
    323,815.65/485,720.24 = 181,660.65/x
  3. Step 3: Cross multiply
    323,815.65x = 485,720.24 × 181,660.65
  4. Step 4: Simplify right side
    323,815.65x = 88,236,253,608.25
  5. Step 5: Solve for x
    x = 88,236,253,608.25/323,815.65
  6. Step 6: Final answer
    x = 272,489.16

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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.