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Finding the Fourth Proportional to 235,687.39, 325,251.62 and 128,260.33

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Solution

The fourth proportional to 235,687.39, 325,251.62 and 128,260.33 is: 177,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,687.39 : 325,251.62 = 128,260.33 : x
  2. Step 2: Convert to fraction form
    235,687.39/325,251.62 = 128,260.33/x
  3. Step 3: Cross multiply
    235,687.39x = 325,251.62 × 128,260.33
  4. Step 4: Simplify right side
    235,687.39x = 41,716,879,140.78
  5. Step 5: Solve for x
    x = 41,716,879,140.78/235,687.39
  6. Step 6: Final answer
    x = 177,000.90

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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.