Home / 279,956.30-419,810.85-80,231.36

Finding the Fourth Proportional to 279,956.30, 419,810.85 and 80,231.36

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Solution

The fourth proportional to 279,956.30, 419,810.85 and 80,231.36 is: 120,311.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,956.30 : 419,810.85 = 80,231.36 : x
  2. Step 2: Convert to fraction form
    279,956.30/419,810.85 = 80,231.36/x
  3. Step 3: Cross multiply
    279,956.30x = 419,810.85 × 80,231.36
  4. Step 4: Simplify right side
    279,956.30x = 33,681,993,339.20
  5. Step 5: Solve for x
    x = 33,681,993,339.20/279,956.30
  6. Step 6: Final answer
    x = 120,311.61

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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.