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Finding the Fourth Proportional to 221,956.20, 332,958.60 and 214,957.80

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Solution

The fourth proportional to 221,956.20, 332,958.60 and 214,957.80 is: 322,460.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,956.20 : 332,958.60 = 214,957.80 : x
  2. Step 2: Convert to fraction form
    221,956.20/332,958.60 = 214,957.80/x
  3. Step 3: Cross multiply
    221,956.20x = 332,958.60 × 214,957.80
  4. Step 4: Simplify right side
    221,956.20x = 71,572,048,147.08
  5. Step 5: Solve for x
    x = 71,572,048,147.08/221,956.20
  6. Step 6: Final answer
    x = 322,460.23

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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.