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Finding the Fourth Proportional to 268,393.40, 403,367.70 and 263,727.80

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Solution

The fourth proportional to 268,393.40, 403,367.70 and 263,727.80 is: 396,355.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,393.40 : 403,367.70 = 263,727.80 : x
  2. Step 2: Convert to fraction form
    268,393.40/403,367.70 = 263,727.80/x
  3. Step 3: Cross multiply
    268,393.40x = 403,367.70 × 263,727.80
  4. Step 4: Simplify right side
    268,393.40x = 106,379,276,112.06
  5. Step 5: Solve for x
    x = 106,379,276,112.06/268,393.40
  6. Step 6: Final answer
    x = 396,355.78

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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.