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Finding the Fourth Proportional to 252,401.45, 378,520.29 and 83,876.49

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Solution

The fourth proportional to 252,401.45, 378,520.29 and 83,876.49 is: 125,787.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,401.45 : 378,520.29 = 83,876.49 : x
  2. Step 2: Convert to fraction form
    252,401.45/378,520.29 = 83,876.49/x
  3. Step 3: Cross multiply
    252,401.45x = 378,520.29 × 83,876.49
  4. Step 4: Simplify right side
    252,401.45x = 31,748,953,318.98
  5. Step 5: Solve for x
    x = 31,748,953,318.98/252,401.45
  6. Step 6: Final answer
    x = 125,787.53

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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.