Home / 279,823.11-419,657.66-77,370.69

Finding the Fourth Proportional to 279,823.11, 419,657.66 and 77,370.69

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Solution

The fourth proportional to 279,823.11, 419,657.66 and 77,370.69 is: 116,034.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,823.11 : 419,657.66 = 77,370.69 : x
  2. Step 2: Convert to fraction form
    279,823.11/419,657.66 = 77,370.69/x
  3. Step 3: Cross multiply
    279,823.11x = 419,657.66 × 77,370.69
  4. Step 4: Simplify right side
    279,823.11x = 32,469,204,194.99
  5. Step 5: Solve for x
    x = 32,469,204,194.99/279,823.11
  6. Step 6: Final answer
    x = 116,034.75

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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.