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Finding the Fourth Proportional to 202,155.20, 303,232.80 and 198,218.60

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Solution

The fourth proportional to 202,155.20, 303,232.80 and 198,218.60 is: 297,327.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,155.20 : 303,232.80 = 198,218.60 : x
  2. Step 2: Convert to fraction form
    202,155.20/303,232.80 = 198,218.60/x
  3. Step 3: Cross multiply
    202,155.20x = 303,232.80 × 198,218.60
  4. Step 4: Simplify right side
    202,155.20x = 60,106,381,090.08
  5. Step 5: Solve for x
    x = 60,106,381,090.08/202,155.20
  6. Step 6: Final answer
    x = 297,327.90

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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.