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Finding the Fourth Proportional to 257,514.63, 386,255.03 and 88,995.75

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Solution

The fourth proportional to 257,514.63, 386,255.03 and 88,995.75 is: 133,487.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,514.63 : 386,255.03 = 88,995.75 : x
  2. Step 2: Convert to fraction form
    257,514.63/386,255.03 = 88,995.75/x
  3. Step 3: Cross multiply
    257,514.63x = 386,255.03 × 88,995.75
  4. Step 4: Simplify right side
    257,514.63x = 34,375,055,641.14
  5. Step 5: Solve for x
    x = 34,375,055,641.14/257,514.63
  6. Step 6: Final answer
    x = 133,487.78

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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.