Home / 420,826.80-580,753.56-229,849.20

Finding the Fourth Proportional to 420,826.80, 580,753.56 and 229,849.20

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Solution

The fourth proportional to 420,826.80, 580,753.56 and 229,849.20 is: 317,198.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,826.80 : 580,753.56 = 229,849.20 : x
  2. Step 2: Convert to fraction form
    420,826.80/580,753.56 = 229,849.20/x
  3. Step 3: Cross multiply
    420,826.80x = 580,753.56 × 229,849.20
  4. Step 4: Simplify right side
    420,826.80x = 133,485,741,163.15
  5. Step 5: Solve for x
    x = 133,485,741,163.15/420,826.80
  6. Step 6: Final answer
    x = 317,198.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.