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Finding the Fourth Proportional to 220,773.60, 330,504.30 and 131,981.40

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Solution

The fourth proportional to 220,773.60, 330,504.30 and 131,981.40 is: 197,579.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,773.60 : 330,504.30 = 131,981.40 : x
  2. Step 2: Convert to fraction form
    220,773.60/330,504.30 = 131,981.40/x
  3. Step 3: Cross multiply
    220,773.60x = 330,504.30 × 131,981.40
  4. Step 4: Simplify right side
    220,773.60x = 43,620,420,220.02
  5. Step 5: Solve for x
    x = 43,620,420,220.02/220,773.60
  6. Step 6: Final answer
    x = 197,579.87

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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.