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Finding the Fourth Proportional to 399,268.92, 550,858.74 and 263,370.36

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Solution

The fourth proportional to 399,268.92, 550,858.74 and 263,370.36 is: 363,363.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,268.92 : 550,858.74 = 263,370.36 : x
  2. Step 2: Convert to fraction form
    399,268.92/550,858.74 = 263,370.36/x
  3. Step 3: Cross multiply
    399,268.92x = 550,858.74 × 263,370.36
  4. Step 4: Simplify right side
    399,268.92x = 145,079,864,662.95
  5. Step 5: Solve for x
    x = 145,079,864,662.95/399,268.92
  6. Step 6: Final answer
    x = 363,363.78

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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.