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Finding the Fourth Proportional to 235,825.92, 325,441.44 and 128,396.16

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Solution

The fourth proportional to 235,825.92, 325,441.44 and 128,396.16 is: 177,187.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,825.92 : 325,441.44 = 128,396.16 : x
  2. Step 2: Convert to fraction form
    235,825.92/325,441.44 = 128,396.16/x
  3. Step 3: Cross multiply
    235,825.92x = 325,441.44 × 128,396.16
  4. Step 4: Simplify right side
    235,825.92x = 41,785,431,200.87
  5. Step 5: Solve for x
    x = 41,785,431,200.87/235,825.92
  6. Step 6: Final answer
    x = 177,187.61

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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.