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Finding the Fourth Proportional to 252,755.75, 379,107.09 and 84,257.93

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Solution

The fourth proportional to 252,755.75, 379,107.09 and 84,257.93 is: 126,378.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,755.75 : 379,107.09 = 84,257.93 : x
  2. Step 2: Convert to fraction form
    252,755.75/379,107.09 = 84,257.93/x
  3. Step 3: Cross multiply
    252,755.75x = 379,107.09 × 84,257.93
  4. Step 4: Simplify right side
    252,755.75x = 31,942,776,756.19
  5. Step 5: Solve for x
    x = 31,942,776,756.19/252,755.75
  6. Step 6: Final answer
    x = 126,378.04

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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.