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Finding the Fourth Proportional to 220,994.95, 331,516.73 and 80,783.95

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Solution

The fourth proportional to 220,994.95, 331,516.73 and 80,783.95 is: 121,184.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,994.95 : 331,516.73 = 80,783.95 : x
  2. Step 2: Convert to fraction form
    220,994.95/331,516.73 = 80,783.95/x
  3. Step 3: Cross multiply
    220,994.95x = 331,516.73 × 80,783.95
  4. Step 4: Simplify right side
    220,994.95x = 26,781,230,536.56
  5. Step 5: Solve for x
    x = 26,781,230,536.56/220,994.95
  6. Step 6: Final answer
    x = 121,184.81

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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.