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Finding the Fourth Proportional to 207,674.80, 311,512.20 and 154,530.70

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Solution

The fourth proportional to 207,674.80, 311,512.20 and 154,530.70 is: 231,796.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,674.80 : 311,512.20 = 154,530.70 : x
  2. Step 2: Convert to fraction form
    207,674.80/311,512.20 = 154,530.70/x
  3. Step 3: Cross multiply
    207,674.80x = 311,512.20 × 154,530.70
  4. Step 4: Simplify right side
    207,674.80x = 48,138,198,324.54
  5. Step 5: Solve for x
    x = 48,138,198,324.54/207,674.80
  6. Step 6: Final answer
    x = 231,796.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.