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Finding the Fourth Proportional to 221,425.75, 305,565.91 and 125,932.33

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Solution

The fourth proportional to 221,425.75, 305,565.91 and 125,932.33 is: 173,785.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,425.75 : 305,565.91 = 125,932.33 : x
  2. Step 2: Convert to fraction form
    221,425.75/305,565.91 = 125,932.33/x
  3. Step 3: Cross multiply
    221,425.75x = 305,565.91 × 125,932.33
  4. Step 4: Simplify right side
    221,425.75x = 38,480,627,014.87
  5. Step 5: Solve for x
    x = 38,480,627,014.87/221,425.75
  6. Step 6: Final answer
    x = 173,785.69

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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.