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Finding the Fourth Proportional to 275,608.20, 412,490.70 and 192,664.20

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Solution

The fourth proportional to 275,608.20, 412,490.70 and 192,664.20 is: 288,352.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,608.20 : 412,490.70 = 192,664.20 : x
  2. Step 2: Convert to fraction form
    275,608.20/412,490.70 = 192,664.20/x
  3. Step 3: Cross multiply
    275,608.20x = 412,490.70 × 192,664.20
  4. Step 4: Simplify right side
    275,608.20x = 79,472,190,722.94
  5. Step 5: Solve for x
    x = 79,472,190,722.94/275,608.20
  6. Step 6: Final answer
    x = 288,352.05

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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.