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Finding the Fourth Proportional to 252,633.60, 379,257.60 and 189,811.20

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Solution

The fourth proportional to 252,633.60, 379,257.60 and 189,811.20 is: 284,947.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,633.60 : 379,257.60 = 189,811.20 : x
  2. Step 2: Convert to fraction form
    252,633.60/379,257.60 = 189,811.20/x
  3. Step 3: Cross multiply
    252,633.60x = 379,257.60 × 189,811.20
  4. Step 4: Simplify right side
    252,633.60x = 71,987,340,165.12
  5. Step 5: Solve for x
    x = 71,987,340,165.12/252,633.60
  6. Step 6: Final answer
    x = 284,947.61

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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.