Home / 285,741.12-428,581.56-117,279.20

Finding the Fourth Proportional to 285,741.12, 428,581.56 and 117,279.20

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Solution

The fourth proportional to 285,741.12, 428,581.56 and 117,279.20 is: 175,906.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,741.12 : 428,581.56 = 117,279.20 : x
  2. Step 2: Convert to fraction form
    285,741.12/428,581.56 = 117,279.20/x
  3. Step 3: Cross multiply
    285,741.12x = 428,581.56 × 117,279.20
  4. Step 4: Simplify right side
    285,741.12x = 50,263,702,491.55
  5. Step 5: Solve for x
    x = 50,263,702,491.55/285,741.12
  6. Step 6: Final answer
    x = 175,906.44

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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.