Home / 285,517.20-428,081.40-107,997.60

Finding the Fourth Proportional to 285,517.20, 428,081.40 and 107,997.60

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Solution

The fourth proportional to 285,517.20, 428,081.40 and 107,997.60 is: 161,922.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,517.20 : 428,081.40 = 107,997.60 : x
  2. Step 2: Convert to fraction form
    285,517.20/428,081.40 = 107,997.60/x
  3. Step 3: Cross multiply
    285,517.20x = 428,081.40 × 107,997.60
  4. Step 4: Simplify right side
    285,517.20x = 46,231,763,804.64
  5. Step 5: Solve for x
    x = 46,231,763,804.64/285,517.20
  6. Step 6: Final answer
    x = 161,922.87

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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.