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Finding the Fourth Proportional to 274,548.20, 412,211.10 and 215,450.60

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Solution

The fourth proportional to 274,548.20, 412,211.10 and 215,450.60 is: 323,481.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,548.20 : 412,211.10 = 215,450.60 : x
  2. Step 2: Convert to fraction form
    274,548.20/412,211.10 = 215,450.60/x
  3. Step 3: Cross multiply
    274,548.20x = 412,211.10 × 215,450.60
  4. Step 4: Simplify right side
    274,548.20x = 88,811,128,821.66
  5. Step 5: Solve for x
    x = 88,811,128,821.66/274,548.20
  6. Step 6: Final answer
    x = 323,481.01

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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.