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Finding the Fourth Proportional to 243,132.88, 335,540.28 and 135,723.88

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Solution

The fourth proportional to 243,132.88, 335,540.28 and 135,723.88 is: 187,308.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,132.88 : 335,540.28 = 135,723.88 : x
  2. Step 2: Convert to fraction form
    243,132.88/335,540.28 = 135,723.88/x
  3. Step 3: Cross multiply
    243,132.88x = 335,540.28 × 135,723.88
  4. Step 4: Simplify right side
    243,132.88x = 45,540,828,697.89
  5. Step 5: Solve for x
    x = 45,540,828,697.89/243,132.88
  6. Step 6: Final answer
    x = 187,308.39

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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.