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Finding the Fourth Proportional to 207,773.80, 311,660.70 and 89,578.60

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Solution

The fourth proportional to 207,773.80, 311,660.70 and 89,578.60 is: 134,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,773.80 : 311,660.70 = 89,578.60 : x
  2. Step 2: Convert to fraction form
    207,773.80/311,660.70 = 89,578.60/x
  3. Step 3: Cross multiply
    207,773.80x = 311,660.70 × 89,578.60
  4. Step 4: Simplify right side
    207,773.80x = 27,918,129,181.02
  5. Step 5: Solve for x
    x = 27,918,129,181.02/207,773.80
  6. Step 6: Final answer
    x = 134,367.90

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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.