Home / 225,631.27-311,371.21-123,660.78

Finding the Fourth Proportional to 225,631.27, 311,371.21 and 123,660.78

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Solution

The fourth proportional to 225,631.27, 311,371.21 and 123,660.78 is: 170,651.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,631.27 : 311,371.21 = 123,660.78 : x
  2. Step 2: Convert to fraction form
    225,631.27/311,371.21 = 123,660.78/x
  3. Step 3: Cross multiply
    225,631.27x = 311,371.21 × 123,660.78
  4. Step 4: Simplify right side
    225,631.27x = 38,504,406,698.14
  5. Step 5: Solve for x
    x = 38,504,406,698.14/225,631.27
  6. Step 6: Final answer
    x = 170,651.91

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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.