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Finding the Fourth Proportional to 235,942.88, 325,601.64 and 128,512.58

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Solution

The fourth proportional to 235,942.88, 325,601.64 and 128,512.58 is: 177,347.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,942.88 : 325,601.64 = 128,512.58 : x
  2. Step 2: Convert to fraction form
    235,942.88/325,601.64 = 128,512.58/x
  3. Step 3: Cross multiply
    235,942.88x = 325,601.64 × 128,512.58
  4. Step 4: Simplify right side
    235,942.88x = 41,843,905,180.62
  5. Step 5: Solve for x
    x = 41,843,905,180.62/235,942.88
  6. Step 6: Final answer
    x = 177,347.61

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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.