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Finding the Fourth Proportional to 202,157.20, 303,235.80 and 198,220.60

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Solution

The fourth proportional to 202,157.20, 303,235.80 and 198,220.60 is: 297,330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,157.20 : 303,235.80 = 198,220.60 : x
  2. Step 2: Convert to fraction form
    202,157.20/303,235.80 = 198,220.60/x
  3. Step 3: Cross multiply
    202,157.20x = 303,235.80 × 198,220.60
  4. Step 4: Simplify right side
    202,157.20x = 60,107,582,217.48
  5. Step 5: Solve for x
    x = 60,107,582,217.48/202,157.20
  6. Step 6: Final answer
    x = 297,330.90

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1.5x scale

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.