Home / 225,715.26-311,485.07-123,738.87

Finding the Fourth Proportional to 225,715.26, 311,485.07 and 123,738.87

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Solution

The fourth proportional to 225,715.26, 311,485.07 and 123,738.87 is: 170,758.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,715.26 : 311,485.07 = 123,738.87 : x
  2. Step 2: Convert to fraction form
    225,715.26/311,485.07 = 123,738.87/x
  3. Step 3: Cross multiply
    225,715.26x = 311,485.07 × 123,738.87
  4. Step 4: Simplify right side
    225,715.26x = 38,542,809,084.92
  5. Step 5: Solve for x
    x = 38,542,809,084.92/225,715.26
  6. Step 6: Final answer
    x = 170,758.55

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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.