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Finding the Fourth Proportional to 225,758.40, 311,550.12 and 123,793.20

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Solution

The fourth proportional to 225,758.40, 311,550.12 and 123,793.20 is: 170,836.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,758.40 : 311,550.12 = 123,793.20 : x
  2. Step 2: Convert to fraction form
    225,758.40/311,550.12 = 123,793.20/x
  3. Step 3: Cross multiply
    225,758.40x = 311,550.12 × 123,793.20
  4. Step 4: Simplify right side
    225,758.40x = 38,567,786,315.18
  5. Step 5: Solve for x
    x = 38,567,786,315.18/225,758.40
  6. Step 6: Final answer
    x = 170,836.55

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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.