Home / 279,934.20-419,899.38-69,571.80

Finding the Fourth Proportional to 279,934.20, 419,899.38 and 69,571.80

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Solution

The fourth proportional to 279,934.20, 419,899.38 and 69,571.80 is: 104,357.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,934.20 : 419,899.38 = 69,571.80 : x
  2. Step 2: Convert to fraction form
    279,934.20/419,899.38 = 69,571.80/x
  3. Step 3: Cross multiply
    279,934.20x = 419,899.38 × 69,571.80
  4. Step 4: Simplify right side
    279,934.20x = 29,213,155,685.48
  5. Step 5: Solve for x
    x = 29,213,155,685.48/279,934.20
  6. Step 6: Final answer
    x = 104,357.22

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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.