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Finding the Fourth Proportional to 235,794.60, 325,385.94 and 128,361.88

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Solution

The fourth proportional to 235,794.60, 325,385.94 and 128,361.88 is: 177,133.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,794.60 : 325,385.94 = 128,361.88 : x
  2. Step 2: Convert to fraction form
    235,794.60/325,385.94 = 128,361.88/x
  3. Step 3: Cross multiply
    235,794.60x = 325,385.94 × 128,361.88
  4. Step 4: Simplify right side
    235,794.60x = 41,767,150,983.97
  5. Step 5: Solve for x
    x = 41,767,150,983.97/235,794.60
  6. Step 6: Final answer
    x = 177,133.62

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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.