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Finding the Fourth Proportional to 207,340.60, 311,010.90 and 88,991.80

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Solution

The fourth proportional to 207,340.60, 311,010.90 and 88,991.80 is: 133,487.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,340.60 : 311,010.90 = 88,991.80 : x
  2. Step 2: Convert to fraction form
    207,340.60/311,010.90 = 88,991.80/x
  3. Step 3: Cross multiply
    207,340.60x = 311,010.90 × 88,991.80
  4. Step 4: Simplify right side
    207,340.60x = 27,677,419,810.62
  5. Step 5: Solve for x
    x = 27,677,419,810.62/207,340.60
  6. Step 6: Final answer
    x = 133,487.70

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1.5x scale

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.