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Finding the Fourth Proportional to 220,866.94, 331,331.73 and 71,072.43

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Solution

The fourth proportional to 220,866.94, 331,331.73 and 71,072.43 is: 106,618.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,866.94 : 331,331.73 = 71,072.43 : x
  2. Step 2: Convert to fraction form
    220,866.94/331,331.73 = 71,072.43/x
  3. Step 3: Cross multiply
    220,866.94x = 331,331.73 × 71,072.43
  4. Step 4: Simplify right side
    220,866.94x = 23,548,551,187.20
  5. Step 5: Solve for x
    x = 23,548,551,187.20/220,866.94
  6. Step 6: Final answer
    x = 106,618.72

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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.