Home / 420,826.22-580,731.20-229,840.38

Finding the Fourth Proportional to 420,826.22, 580,731.20 and 229,840.38

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Solution

The fourth proportional to 420,826.22, 580,731.20 and 229,840.38 is: 317,174.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,826.22 : 580,731.20 = 229,840.38 : x
  2. Step 2: Convert to fraction form
    420,826.22/580,731.20 = 229,840.38/x
  3. Step 3: Cross multiply
    420,826.22x = 580,731.20 × 229,840.38
  4. Step 4: Simplify right side
    420,826.22x = 133,475,479,685.86
  5. Step 5: Solve for x
    x = 133,475,479,685.86/420,826.22
  6. Step 6: Final answer
    x = 317,174.82

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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.