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Finding the Fourth Proportional to 323,964.90, 486,166.05 and 211,370.85

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Solution

The fourth proportional to 323,964.90, 486,166.05 and 211,370.85 is: 317,198.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,964.90 : 486,166.05 = 211,370.85 : x
  2. Step 2: Convert to fraction form
    323,964.90/486,166.05 = 211,370.85/x
  3. Step 3: Cross multiply
    323,964.90x = 486,166.05 × 211,370.85
  4. Step 4: Simplify right side
    323,964.90x = 102,761,331,229.64
  5. Step 5: Solve for x
    x = 102,761,331,229.64/323,964.90
  6. Step 6: Final answer
    x = 317,198.97

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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.