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Finding the Fourth Proportional to 207,436.44, 311,229.38 and 72,520.41

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Solution

The fourth proportional to 207,436.44, 311,229.38 and 72,520.41 is: 108,806.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,436.44 : 311,229.38 = 72,520.41 : x
  2. Step 2: Convert to fraction form
    207,436.44/311,229.38 = 72,520.41/x
  3. Step 3: Cross multiply
    207,436.44x = 311,229.38 × 72,520.41
  4. Step 4: Simplify right side
    207,436.44x = 22,570,482,241.65
  5. Step 5: Solve for x
    x = 22,570,482,241.65/207,436.44
  6. Step 6: Final answer
    x = 108,806.74

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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.