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Finding the Fourth Proportional to 221,955.52, 332,964.88 and 72,147.64

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Solution

The fourth proportional to 221,955.52, 332,964.88 and 72,147.64 is: 108,231.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,955.52 : 332,964.88 = 72,147.64 : x
  2. Step 2: Convert to fraction form
    221,955.52/332,964.88 = 72,147.64/x
  3. Step 3: Cross multiply
    221,955.52x = 332,964.88 × 72,147.64
  4. Step 4: Simplify right side
    221,955.52x = 24,022,630,294.88
  5. Step 5: Solve for x
    x = 24,022,630,294.88/221,955.52
  6. Step 6: Final answer
    x = 108,231.73

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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.