Home / 225,628.29-311,375.66-128,847.93

Finding the Fourth Proportional to 225,628.29, 311,375.66 and 128,847.93

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Solution

The fourth proportional to 225,628.29, 311,375.66 and 128,847.93 is: 177,815.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,628.29 : 311,375.66 = 128,847.93 : x
  2. Step 2: Convert to fraction form
    225,628.29/311,375.66 = 128,847.93/x
  3. Step 3: Cross multiply
    225,628.29x = 311,375.66 × 128,847.93
  4. Step 4: Simplify right side
    225,628.29x = 40,120,109,243.38
  5. Step 5: Solve for x
    x = 40,120,109,243.38/225,628.29
  6. Step 6: Final answer
    x = 177,815.07

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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.