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Finding the Fourth Proportional to 394,591.80, 591,887.70 and 268,620.60

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Solution

The fourth proportional to 394,591.80, 591,887.70 and 268,620.60 is: 402,930.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,591.80 : 591,887.70 = 268,620.60 : x
  2. Step 2: Convert to fraction form
    394,591.80/591,887.70 = 268,620.60/x
  3. Step 3: Cross multiply
    394,591.80x = 591,887.70 × 268,620.60
  4. Step 4: Simplify right side
    394,591.80x = 158,993,229,106.62
  5. Step 5: Solve for x
    x = 158,993,229,106.62/394,591.80
  6. Step 6: Final answer
    x = 402,930.90

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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.