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Finding the Fourth Proportional to 215,568.87, 323,212.49 and 103,245.49

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Solution

The fourth proportional to 215,568.87, 323,212.49 and 103,245.49 is: 154,800.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,568.87 : 323,212.49 = 103,245.49 : x
  2. Step 2: Convert to fraction form
    215,568.87/323,212.49 = 103,245.49/x
  3. Step 3: Cross multiply
    215,568.87x = 323,212.49 × 103,245.49
  4. Step 4: Simplify right side
    215,568.87x = 33,370,231,904.17
  5. Step 5: Solve for x
    x = 33,370,231,904.17/215,568.87
  6. Step 6: Final answer
    x = 154,800.79

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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.