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Finding the Fourth Proportional to 225,728.96, 338,645.48 and 75,965.36

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Solution

The fourth proportional to 225,728.96, 338,645.48 and 75,965.36 is: 113,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,728.96 : 338,645.48 = 75,965.36 : x
  2. Step 2: Convert to fraction form
    225,728.96/338,645.48 = 75,965.36/x
  3. Step 3: Cross multiply
    225,728.96x = 338,645.48 × 75,965.36
  4. Step 4: Simplify right side
    225,728.96x = 25,725,325,800.57
  5. Step 5: Solve for x
    x = 25,725,325,800.57/225,728.96
  6. Step 6: Final answer
    x = 113,965.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.