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Finding the Fourth Proportional to 220,994.60, 331,780.98 and 131,201.24

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Solution

The fourth proportional to 220,994.60, 331,780.98 and 131,201.24 is: 196,973.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,994.60 : 331,780.98 = 131,201.24 : x
  2. Step 2: Convert to fraction form
    220,994.60/331,780.98 = 131,201.24/x
  3. Step 3: Cross multiply
    220,994.60x = 331,780.98 × 131,201.24
  4. Step 4: Simplify right side
    220,994.60x = 43,530,075,984.42
  5. Step 5: Solve for x
    x = 43,530,075,984.42/220,994.60
  6. Step 6: Final answer
    x = 196,973.48

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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.