Home / 279,824.11-419,659.16-77,371.69

Finding the Fourth Proportional to 279,824.11, 419,659.16 and 77,371.69

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Solution

The fourth proportional to 279,824.11, 419,659.16 and 77,371.69 is: 116,036.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,824.11 : 419,659.16 = 77,371.69 : x
  2. Step 2: Convert to fraction form
    279,824.11/419,659.16 = 77,371.69/x
  3. Step 3: Cross multiply
    279,824.11x = 419,659.16 × 77,371.69
  4. Step 4: Simplify right side
    279,824.11x = 32,469,738,433.18
  5. Step 5: Solve for x
    x = 32,469,738,433.18/279,824.11
  6. Step 6: Final answer
    x = 116,036.24

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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.