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Finding the Fourth Proportional to 243,340.76, 335,806.67 and 135,912.29

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Solution

The fourth proportional to 243,340.76, 335,806.67 and 135,912.29 is: 187,556.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,340.76 : 335,806.67 = 135,912.29 : x
  2. Step 2: Convert to fraction form
    243,340.76/335,806.67 = 135,912.29/x
  3. Step 3: Cross multiply
    243,340.76x = 335,806.67 × 135,912.29
  4. Step 4: Simplify right side
    243,340.76x = 45,640,251,158.38
  5. Step 5: Solve for x
    x = 45,640,251,158.38/243,340.76
  6. Step 6: Final answer
    x = 187,556.96

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1.5x scale

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.