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Finding the Fourth Proportional to 243,035.56, 335,390 and 135,610.12

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Solution

The fourth proportional to 243,035.56, 335,390 and 135,610.12 is: 187,142.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,035.56 : 335,390 = 135,610.12 : x
  2. Step 2: Convert to fraction form
    243,035.56/335,390 = 135,610.12/x
  3. Step 3: Cross multiply
    243,035.56x = 335,390 × 135,610.12
  4. Step 4: Simplify right side
    243,035.56x = 45,482,278,146.80
  5. Step 5: Solve for x
    x = 45,482,278,146.80/243,035.56
  6. Step 6: Final answer
    x = 187,142.48

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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.