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Finding the Fourth Proportional to 221,845.80, 332,987.40 and 109,652.70

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Solution

The fourth proportional to 221,845.80, 332,987.40 and 109,652.70 is: 164,587.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,845.80 : 332,987.40 = 109,652.70 : x
  2. Step 2: Convert to fraction form
    221,845.80/332,987.40 = 109,652.70/x
  3. Step 3: Cross multiply
    221,845.80x = 332,987.40 × 109,652.70
  4. Step 4: Simplify right side
    221,845.80x = 36,512,967,475.98
  5. Step 5: Solve for x
    x = 36,512,967,475.98/221,845.80
  6. Step 6: Final answer
    x = 164,587.15

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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.