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Finding the Fourth Proportional to 221,979.20, 332,993.10 and 214,980.80

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Solution

The fourth proportional to 221,979.20, 332,993.10 and 214,980.80 is: 322,494.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,979.20 : 332,993.10 = 214,980.80 : x
  2. Step 2: Convert to fraction form
    221,979.20/332,993.10 = 214,980.80/x
  3. Step 3: Cross multiply
    221,979.20x = 332,993.10 × 214,980.80
  4. Step 4: Simplify right side
    221,979.20x = 71,587,123,032.48
  5. Step 5: Solve for x
    x = 71,587,123,032.48/221,979.20
  6. Step 6: Final answer
    x = 322,494.73

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1.5x scale

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.