Home / 279,120.20-418,681.52-89,609.36

Finding the Fourth Proportional to 279,120.20, 418,681.52 and 89,609.36

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Solution

The fourth proportional to 279,120.20, 418,681.52 and 89,609.36 is: 134,414.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,120.20 : 418,681.52 = 89,609.36 : x
  2. Step 2: Convert to fraction form
    279,120.20/418,681.52 = 89,609.36/x
  3. Step 3: Cross multiply
    279,120.20x = 418,681.52 × 89,609.36
  4. Step 4: Simplify right side
    279,120.20x = 37,517,780,509.57
  5. Step 5: Solve for x
    x = 37,517,780,509.57/279,120.20
  6. Step 6: Final answer
    x = 134,414.42

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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.