Home / 221,255.40-331,844.70-80,941.80

Finding the Fourth Proportional to 221,255.40, 331,844.70 and 80,941.80

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Solution

The fourth proportional to 221,255.40, 331,844.70 and 80,941.80 is: 121,398.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,255.40 : 331,844.70 = 80,941.80 : x
  2. Step 2: Convert to fraction form
    221,255.40/331,844.70 = 80,941.80/x
  3. Step 3: Cross multiply
    221,255.40x = 331,844.70 × 80,941.80
  4. Step 4: Simplify right side
    221,255.40x = 26,860,107,338.46
  5. Step 5: Solve for x
    x = 26,860,107,338.46/221,255.40
  6. Step 6: Final answer
    x = 121,398.65

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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.