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Finding the Fourth Proportional to 394,297.20, 591,834.60 and 194,842.80

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Solution

The fourth proportional to 394,297.20, 591,834.60 and 194,842.80 is: 292,456.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,297.20 : 591,834.60 = 194,842.80 : x
  2. Step 2: Convert to fraction form
    394,297.20/591,834.60 = 194,842.80/x
  3. Step 3: Cross multiply
    394,297.20x = 591,834.60 × 194,842.80
  4. Step 4: Simplify right side
    394,297.20x = 115,314,710,600.88
  5. Step 5: Solve for x
    x = 115,314,710,600.88/394,297.20
  6. Step 6: Final answer
    x = 292,456.33

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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.