Home / 279,836.65-419,837.01-90,326.26

Finding the Fourth Proportional to 279,836.65, 419,837.01 and 90,326.26

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Solution

The fourth proportional to 279,836.65, 419,837.01 and 90,326.26 is: 135,515.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,836.65 : 419,837.01 = 90,326.26 : x
  2. Step 2: Convert to fraction form
    279,836.65/419,837.01 = 90,326.26/x
  3. Step 3: Cross multiply
    279,836.65x = 419,837.01 × 90,326.26
  4. Step 4: Simplify right side
    279,836.65x = 37,922,306,922.88
  5. Step 5: Solve for x
    x = 37,922,306,922.88/279,836.65
  6. Step 6: Final answer
    x = 135,515.87

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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.