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Finding the Fourth Proportional to 275,262.65, 412,932.48 and 85,736.78

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Solution

The fourth proportional to 275,262.65, 412,932.48 and 85,736.78 is: 128,617.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,262.65 : 412,932.48 = 85,736.78 : x
  2. Step 2: Convert to fraction form
    275,262.65/412,932.48 = 85,736.78/x
  3. Step 3: Cross multiply
    275,262.65x = 412,932.48 × 85,736.78
  4. Step 4: Simplify right side
    275,262.65x = 35,403,500,837.21
  5. Step 5: Solve for x
    x = 35,403,500,837.21/275,262.65
  6. Step 6: Final answer
    x = 128,617.16

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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.