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Finding the Fourth Proportional to 202,212.80, 303,319.20 and 135,857.60

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Solution

The fourth proportional to 202,212.80, 303,319.20 and 135,857.60 is: 203,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,212.80 : 303,319.20 = 135,857.60 : x
  2. Step 2: Convert to fraction form
    202,212.80/303,319.20 = 135,857.60/x
  3. Step 3: Cross multiply
    202,212.80x = 303,319.20 × 135,857.60
  4. Step 4: Simplify right side
    202,212.80x = 41,208,218,545.92
  5. Step 5: Solve for x
    x = 41,208,218,545.92/202,212.80
  6. Step 6: Final answer
    x = 203,786.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.