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Finding the Fourth Proportional to 252,791.11, 378,755.07 and 139,034.13

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Solution

The fourth proportional to 252,791.11, 378,755.07 and 139,034.13 is: 208,313.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,791.11 : 378,755.07 = 139,034.13 : x
  2. Step 2: Convert to fraction form
    252,791.11/378,755.07 = 139,034.13/x
  3. Step 3: Cross multiply
    252,791.11x = 378,755.07 × 139,034.13
  4. Step 4: Simplify right side
    252,791.11x = 52,659,881,829.33
  5. Step 5: Solve for x
    x = 52,659,881,829.33/252,791.11
  6. Step 6: Final answer
    x = 208,313.82

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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.