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Finding the Fourth Proportional to 202,405.20, 303,121.80 and 108,704.40

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Solution

The fourth proportional to 202,405.20, 303,121.80 and 108,704.40 is: 162,795.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,405.20 : 303,121.80 = 108,704.40 : x
  2. Step 2: Convert to fraction form
    202,405.20/303,121.80 = 108,704.40/x
  3. Step 3: Cross multiply
    202,405.20x = 303,121.80 × 108,704.40
  4. Step 4: Simplify right side
    202,405.20x = 32,950,673,395.92
  5. Step 5: Solve for x
    x = 32,950,673,395.92/202,405.20
  6. Step 6: Final answer
    x = 162,795.59

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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.