Home / 225,439.20-311,097.84-129,949.92

Finding the Fourth Proportional to 225,439.20, 311,097.84 and 129,949.92

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Solution

The fourth proportional to 225,439.20, 311,097.84 and 129,949.92 is: 179,326.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,439.20 : 311,097.84 = 129,949.92 : x
  2. Step 2: Convert to fraction form
    225,439.20/311,097.84 = 129,949.92/x
  3. Step 3: Cross multiply
    225,439.20x = 311,097.84 × 129,949.92
  4. Step 4: Simplify right side
    225,439.20x = 40,427,139,420.17
  5. Step 5: Solve for x
    x = 40,427,139,420.17/225,439.20
  6. Step 6: Final answer
    x = 179,326.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.