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Finding the Fourth Proportional to 202,231.20, 303,361.20 and 61,989.60

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Solution

The fourth proportional to 202,231.20, 303,361.20 and 61,989.60 is: 92,988.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,231.20 : 303,361.20 = 61,989.60 : x
  2. Step 2: Convert to fraction form
    202,231.20/303,361.20 = 61,989.60/x
  3. Step 3: Cross multiply
    202,231.20x = 303,361.20 × 61,989.60
  4. Step 4: Simplify right side
    202,231.20x = 18,805,239,443.52
  5. Step 5: Solve for x
    x = 18,805,239,443.52/202,231.20
  6. Step 6: Final answer
    x = 92,988.81

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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.