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Finding the Fourth Proportional to 235,850.57, 325,469.56 and 128,418.65

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Solution

The fourth proportional to 235,850.57, 325,469.56 and 128,418.65 is: 177,215.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,850.57 : 325,469.56 = 128,418.65 : x
  2. Step 2: Convert to fraction form
    235,850.57/325,469.56 = 128,418.65/x
  3. Step 3: Cross multiply
    235,850.57x = 325,469.56 × 128,418.65
  4. Step 4: Simplify right side
    235,850.57x = 41,796,361,511.29
  5. Step 5: Solve for x
    x = 41,796,361,511.29/235,850.57
  6. Step 6: Final answer
    x = 177,215.44

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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.