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Finding the Fourth Proportional to 235,805.62, 325,418.57 and 128,377.48

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Solution

The fourth proportional to 235,805.62, 325,418.57 and 128,377.48 is: 177,164.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,805.62 : 325,418.57 = 128,377.48 : x
  2. Step 2: Convert to fraction form
    235,805.62/325,418.57 = 128,377.48/x
  3. Step 3: Cross multiply
    235,805.62x = 325,418.57 × 128,377.48
  4. Step 4: Simplify right side
    235,805.62x = 41,776,415,961.80
  5. Step 5: Solve for x
    x = 41,776,415,961.80/235,805.62
  6. Step 6: Final answer
    x = 177,164.63

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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.