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Finding the Fourth Proportional to 268,391.40, 403,364.70 and 263,725.80

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Solution

The fourth proportional to 268,391.40, 403,364.70 and 263,725.80 is: 396,352.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,391.40 : 403,364.70 = 263,725.80 : x
  2. Step 2: Convert to fraction form
    268,391.40/403,364.70 = 263,725.80/x
  3. Step 3: Cross multiply
    268,391.40x = 403,364.70 × 263,725.80
  4. Step 4: Simplify right side
    268,391.40x = 106,377,678,199.26
  5. Step 5: Solve for x
    x = 106,377,678,199.26/268,391.40
  6. Step 6: Final answer
    x = 396,352.78

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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.