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Finding the Fourth Proportional to 235,838.97, 325,463.61 and 128,414.88

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Solution

The fourth proportional to 235,838.97, 325,463.61 and 128,414.88 is: 177,215.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,838.97 : 325,463.61 = 128,414.88 : x
  2. Step 2: Convert to fraction form
    235,838.97/325,463.61 = 128,414.88/x
  3. Step 3: Cross multiply
    235,838.97x = 325,463.61 × 128,414.88
  4. Step 4: Simplify right side
    235,838.97x = 41,794,370,422.52
  5. Step 5: Solve for x
    x = 41,794,370,422.52/235,838.97
  6. Step 6: Final answer
    x = 177,215.71

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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.