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Finding the Fourth Proportional to 221,241.40, 331,823.70 and 80,927.80

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Solution

The fourth proportional to 221,241.40, 331,823.70 and 80,927.80 is: 121,377.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,241.40 : 331,823.70 = 80,927.80 : x
  2. Step 2: Convert to fraction form
    221,241.40/331,823.70 = 80,927.80/x
  3. Step 3: Cross multiply
    221,241.40x = 331,823.70 × 80,927.80
  4. Step 4: Simplify right side
    221,241.40x = 26,853,762,028.86
  5. Step 5: Solve for x
    x = 26,853,762,028.86/221,241.40
  6. Step 6: Final answer
    x = 121,377.65

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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.