Home / 280,494.60-420,944.88-109,741.56

Finding the Fourth Proportional to 280,494.60, 420,944.88 and 109,741.56

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Solution

The fourth proportional to 280,494.60, 420,944.88 and 109,741.56 is: 164,691.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,494.60 : 420,944.88 = 109,741.56 : x
  2. Step 2: Convert to fraction form
    280,494.60/420,944.88 = 109,741.56/x
  3. Step 3: Cross multiply
    280,494.60x = 420,944.88 × 109,741.56
  4. Step 4: Simplify right side
    280,494.60x = 46,195,147,805.21
  5. Step 5: Solve for x
    x = 46,195,147,805.21/280,494.60
  6. Step 6: Final answer
    x = 164,691.75

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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.