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Finding the Fourth Proportional to 303,480.32, 455,338.20 and 125,942

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Solution

The fourth proportional to 303,480.32, 455,338.20 and 125,942 is: 188,961.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,480.32 : 455,338.20 = 125,942 : x
  2. Step 2: Convert to fraction form
    303,480.32/455,338.20 = 125,942/x
  3. Step 3: Cross multiply
    303,480.32x = 455,338.20 × 125,942
  4. Step 4: Simplify right side
    303,480.32x = 57,346,203,584.40
  5. Step 5: Solve for x
    x = 57,346,203,584.40/303,480.32
  6. Step 6: Final answer
    x = 188,961.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.