Home / 285,764.22-428,613.39-75,418.56

Finding the Fourth Proportional to 285,764.22, 428,613.39 and 75,418.56

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Solution

The fourth proportional to 285,764.22, 428,613.39 and 75,418.56 is: 113,119.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,764.22 : 428,613.39 = 75,418.56 : x
  2. Step 2: Convert to fraction form
    285,764.22/428,613.39 = 75,418.56/x
  3. Step 3: Cross multiply
    285,764.22x = 428,613.39 × 75,418.56
  4. Step 4: Simplify right side
    285,764.22x = 32,325,404,670.52
  5. Step 5: Solve for x
    x = 32,325,404,670.52/285,764.22
  6. Step 6: Final answer
    x = 113,119.15

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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.