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Finding the Fourth Proportional to 273,893.67, 378,078.57 and 245,162.57

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Solution

The fourth proportional to 273,893.67, 378,078.57 and 245,162.57 is: 338,418.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,893.67 : 378,078.57 = 245,162.57 : x
  2. Step 2: Convert to fraction form
    273,893.67/378,078.57 = 245,162.57/x
  3. Step 3: Cross multiply
    273,893.67x = 378,078.57 × 245,162.57
  4. Step 4: Simplify right side
    273,893.67x = 92,690,711,992.73
  5. Step 5: Solve for x
    x = 92,690,711,992.73/273,893.67
  6. Step 6: Final answer
    x = 338,418.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.