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Finding the Fourth Proportional to 221,446.10, 332,104.35 and 79,274.90

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Solution

The fourth proportional to 221,446.10, 332,104.35 and 79,274.90 is: 118,889.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,446.10 : 332,104.35 = 79,274.90 : x
  2. Step 2: Convert to fraction form
    221,446.10/332,104.35 = 79,274.90/x
  3. Step 3: Cross multiply
    221,446.10x = 332,104.35 × 79,274.90
  4. Step 4: Simplify right side
    221,446.10x = 26,327,539,135.82
  5. Step 5: Solve for x
    x = 26,327,539,135.82/221,446.10
  6. Step 6: Final answer
    x = 118,889.15

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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.