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Finding the Fourth Proportional to 225,452.46, 311,121.48 and 128,653.83

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Solution

The fourth proportional to 225,452.46, 311,121.48 and 128,653.83 is: 177,540.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,452.46 : 311,121.48 = 128,653.83 : x
  2. Step 2: Convert to fraction form
    225,452.46/311,121.48 = 128,653.83/x
  3. Step 3: Cross multiply
    225,452.46x = 311,121.48 × 128,653.83
  4. Step 4: Simplify right side
    225,452.46x = 40,026,969,997.27
  5. Step 5: Solve for x
    x = 40,026,969,997.27/225,452.46
  6. Step 6: Final answer
    x = 177,540.62

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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.