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Finding the Fourth Proportional to 268,377.40, 403,343.70 and 263,711.80

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Solution

The fourth proportional to 268,377.40, 403,343.70 and 263,711.80 is: 396,331.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,377.40 : 403,343.70 = 263,711.80 : x
  2. Step 2: Convert to fraction form
    268,377.40/403,343.70 = 263,711.80/x
  3. Step 3: Cross multiply
    268,377.40x = 403,343.70 × 263,711.80
  4. Step 4: Simplify right side
    268,377.40x = 106,366,493,145.66
  5. Step 5: Solve for x
    x = 106,366,493,145.66/268,377.40
  6. Step 6: Final answer
    x = 396,331.78

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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.