Home / 278,231.76-417,408.12-91,236.24

Finding the Fourth Proportional to 278,231.76, 417,408.12 and 91,236.24

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Solution

The fourth proportional to 278,231.76, 417,408.12 and 91,236.24 is: 136,874.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,231.76 : 417,408.12 = 91,236.24 : x
  2. Step 2: Convert to fraction form
    278,231.76/417,408.12 = 91,236.24/x
  3. Step 3: Cross multiply
    278,231.76x = 417,408.12 × 91,236.24
  4. Step 4: Simplify right side
    278,231.76x = 38,082,747,414.27
  5. Step 5: Solve for x
    x = 38,082,747,414.27/278,231.76
  6. Step 6: Final answer
    x = 136,874.19

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1.5x scale

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.