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Finding the Fourth Proportional to 207,246.70, 311,034.10 and 80,947.46

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Solution

The fourth proportional to 207,246.70, 311,034.10 and 80,947.46 is: 121,485.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,246.70 : 311,034.10 = 80,947.46 : x
  2. Step 2: Convert to fraction form
    207,246.70/311,034.10 = 80,947.46/x
  3. Step 3: Cross multiply
    207,246.70x = 311,034.10 × 80,947.46
  4. Step 4: Simplify right side
    207,246.70x = 25,177,420,368.39
  5. Step 5: Solve for x
    x = 25,177,420,368.39/207,246.70
  6. Step 6: Final answer
    x = 121,485.27

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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.