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Finding the Fourth Proportional to 248,691.78, 343,195.08 and 135,514.52

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Solution

The fourth proportional to 248,691.78, 343,195.08 and 135,514.52 is: 187,010.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,691.78 : 343,195.08 = 135,514.52 : x
  2. Step 2: Convert to fraction form
    248,691.78/343,195.08 = 135,514.52/x
  3. Step 3: Cross multiply
    248,691.78x = 343,195.08 × 135,514.52
  4. Step 4: Simplify right side
    248,691.78x = 46,507,916,532.56
  5. Step 5: Solve for x
    x = 46,507,916,532.56/248,691.78
  6. Step 6: Final answer
    x = 187,010.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.