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Finding the Fourth Proportional to 203,362.84, 305,069.78 and 61,185.97

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Solution

The fourth proportional to 203,362.84, 305,069.78 and 61,185.97 is: 91,786.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,362.84 : 305,069.78 = 61,185.97 : x
  2. Step 2: Convert to fraction form
    203,362.84/305,069.78 = 61,185.97/x
  3. Step 3: Cross multiply
    203,362.84x = 305,069.78 × 61,185.97
  4. Step 4: Simplify right side
    203,362.84x = 18,665,990,406.99
  5. Step 5: Solve for x
    x = 18,665,990,406.99/203,362.84
  6. Step 6: Final answer
    x = 91,786.63

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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.