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Finding the Fourth Proportional to 252,640.52, 378,960.80 and 75,150.08

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Solution

The fourth proportional to 252,640.52, 378,960.80 and 75,150.08 is: 112,725.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,640.52 : 378,960.80 = 75,150.08 : x
  2. Step 2: Convert to fraction form
    252,640.52/378,960.80 = 75,150.08/x
  3. Step 3: Cross multiply
    252,640.52x = 378,960.80 × 75,150.08
  4. Step 4: Simplify right side
    252,640.52x = 28,478,934,436.86
  5. Step 5: Solve for x
    x = 28,478,934,436.86/252,640.52
  6. Step 6: Final answer
    x = 112,725.13

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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.