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Finding the Fourth Proportional to 394,480.20, 591,720.30 and 273,757.80

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Solution

The fourth proportional to 394,480.20, 591,720.30 and 273,757.80 is: 410,636.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,480.20 : 591,720.30 = 273,757.80 : x
  2. Step 2: Convert to fraction form
    394,480.20/591,720.30 = 273,757.80/x
  3. Step 3: Cross multiply
    394,480.20x = 591,720.30 × 273,757.80
  4. Step 4: Simplify right side
    394,480.20x = 161,988,047,543.34
  5. Step 5: Solve for x
    x = 161,988,047,543.34/394,480.20
  6. Step 6: Final answer
    x = 410,636.70

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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.