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Finding the Fourth Proportional to 305,919.75, 422,105.25 and 185,037.39

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Solution

The fourth proportional to 305,919.75, 422,105.25 and 185,037.39 is: 255,312.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,919.75 : 422,105.25 = 185,037.39 : x
  2. Step 2: Convert to fraction form
    305,919.75/422,105.25 = 185,037.39/x
  3. Step 3: Cross multiply
    305,919.75x = 422,105.25 × 185,037.39
  4. Step 4: Simplify right side
    305,919.75x = 78,105,253,765.30
  5. Step 5: Solve for x
    x = 78,105,253,765.30/305,919.75
  6. Step 6: Final answer
    x = 255,312.88

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.