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Finding the Fourth Proportional to 275,511.12, 412,872.36 and 156,937.56

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Solution

The fourth proportional to 275,511.12, 412,872.36 and 156,937.56 is: 235,181.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,511.12 : 412,872.36 = 156,937.56 : x
  2. Step 2: Convert to fraction form
    275,511.12/412,872.36 = 156,937.56/x
  3. Step 3: Cross multiply
    275,511.12x = 412,872.36 × 156,937.56
  4. Step 4: Simplify right side
    275,511.12x = 64,795,180,769.84
  5. Step 5: Solve for x
    x = 64,795,180,769.84/275,511.12
  6. Step 6: Final answer
    x = 235,181.73

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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.