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Finding the Fourth Proportional to 202,172.20, 303,258.30 and 61,912.60

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Solution

The fourth proportional to 202,172.20, 303,258.30 and 61,912.60 is: 92,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,172.20 : 303,258.30 = 61,912.60 : x
  2. Step 2: Convert to fraction form
    202,172.20/303,258.30 = 61,912.60/x
  3. Step 3: Cross multiply
    202,172.20x = 303,258.30 × 61,912.60
  4. Step 4: Simplify right side
    202,172.20x = 18,775,509,824.58
  5. Step 5: Solve for x
    x = 18,775,509,824.58/202,172.20
  6. Step 6: Final answer
    x = 92,868.90

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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.