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Finding the Fourth Proportional to 412,619.80, 618,843.30 and 202,408.60

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Solution

The fourth proportional to 412,619.80, 618,843.30 and 202,408.60 is: 303,570.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,619.80 : 618,843.30 = 202,408.60 : x
  2. Step 2: Convert to fraction form
    412,619.80/618,843.30 = 202,408.60/x
  3. Step 3: Cross multiply
    412,619.80x = 618,843.30 × 202,408.60
  4. Step 4: Simplify right side
    412,619.80x = 125,259,205,972.38
  5. Step 5: Solve for x
    x = 125,259,205,972.38/412,619.80
  6. Step 6: Final answer
    x = 303,570.52

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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.