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Finding the Fourth Proportional to 204,797.50, 307,211.81 and 69,819.64

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Solution

The fourth proportional to 204,797.50, 307,211.81 and 69,819.64 is: 104,734.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,797.50 : 307,211.81 = 69,819.64 : x
  2. Step 2: Convert to fraction form
    204,797.50/307,211.81 = 69,819.64/x
  3. Step 3: Cross multiply
    204,797.50x = 307,211.81 × 69,819.64
  4. Step 4: Simplify right side
    204,797.50x = 21,449,416,860.82
  5. Step 5: Solve for x
    x = 21,449,416,860.82/204,797.50
  6. Step 6: Final answer
    x = 104,734.76

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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.