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Finding the Fourth Proportional to 217,229.94, 325,845.12 and 90,800.94

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Solution

The fourth proportional to 217,229.94, 325,845.12 and 90,800.94 is: 136,201.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,229.94 : 325,845.12 = 90,800.94 : x
  2. Step 2: Convert to fraction form
    217,229.94/325,845.12 = 90,800.94/x
  3. Step 3: Cross multiply
    217,229.94x = 325,845.12 × 90,800.94
  4. Step 4: Simplify right side
    217,229.94x = 29,587,043,190.41
  5. Step 5: Solve for x
    x = 29,587,043,190.41/217,229.94
  6. Step 6: Final answer
    x = 136,201.50

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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.