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Finding the Fourth Proportional to 220,804.63, 331,212.41 and 80,563.25

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Solution

The fourth proportional to 220,804.63, 331,212.41 and 80,563.25 is: 120,846.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,804.63 : 331,212.41 = 80,563.25 : x
  2. Step 2: Convert to fraction form
    220,804.63/331,212.41 = 80,563.25/x
  3. Step 3: Cross multiply
    220,804.63x = 331,212.41 × 80,563.25
  4. Step 4: Simplify right side
    220,804.63x = 26,683,548,189.93
  5. Step 5: Solve for x
    x = 26,683,548,189.93/220,804.63
  6. Step 6: Final answer
    x = 120,846.87

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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.