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Finding the Fourth Proportional to 191,481.88, 287,200.89 and 51,251.44

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Solution

The fourth proportional to 191,481.88, 287,200.89 and 51,251.44 is: 76,871.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,481.88 : 287,200.89 = 51,251.44 : x
  2. Step 2: Convert to fraction form
    191,481.88/287,200.89 = 51,251.44/x
  3. Step 3: Cross multiply
    191,481.88x = 287,200.89 × 51,251.44
  4. Step 4: Simplify right side
    191,481.88x = 14,719,459,181.78
  5. Step 5: Solve for x
    x = 14,719,459,181.78/191,481.88
  6. Step 6: Final answer
    x = 76,871.29

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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.