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Finding the Fourth Proportional to 235,778.99, 325,375.03 and 128,349.82

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Solution

The fourth proportional to 235,778.99, 325,375.03 and 128,349.82 is: 177,122.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,778.99 : 325,375.03 = 128,349.82 : x
  2. Step 2: Convert to fraction form
    235,778.99/325,375.03 = 128,349.82/x
  3. Step 3: Cross multiply
    235,778.99x = 325,375.03 × 128,349.82
  4. Step 4: Simplify right side
    235,778.99x = 41,761,826,532.99
  5. Step 5: Solve for x
    x = 41,761,826,532.99/235,778.99
  6. Step 6: Final answer
    x = 177,122.76

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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.