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Finding the Fourth Proportional to 261,755.65, 391,858.46 and 161,593.79

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Solution

The fourth proportional to 261,755.65, 391,858.46 and 161,593.79 is: 241,912.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,755.65 : 391,858.46 = 161,593.79 : x
  2. Step 2: Convert to fraction form
    261,755.65/391,858.46 = 161,593.79/x
  3. Step 3: Cross multiply
    261,755.65x = 391,858.46 × 161,593.79
  4. Step 4: Simplify right side
    261,755.65x = 63,321,891,533.68
  5. Step 5: Solve for x
    x = 63,321,891,533.68/261,755.65
  6. Step 6: Final answer
    x = 241,912.22

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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.