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Finding the Fourth Proportional to 243,456.78, 335,964.12 and 136,027.68

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Solution

The fourth proportional to 243,456.78, 335,964.12 and 136,027.68 is: 187,714.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,456.78 : 335,964.12 = 136,027.68 : x
  2. Step 2: Convert to fraction form
    243,456.78/335,964.12 = 136,027.68/x
  3. Step 3: Cross multiply
    243,456.78x = 335,964.12 × 136,027.68
  4. Step 4: Simplify right side
    243,456.78x = 45,700,419,806.84
  5. Step 5: Solve for x
    x = 45,700,419,806.84/243,456.78
  6. Step 6: Final answer
    x = 187,714.71

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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.