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Finding the Fourth Proportional to 494,910.38, 682,978.14 and 268,555.88

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Solution

The fourth proportional to 494,910.38, 682,978.14 and 268,555.88 is: 370,608.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,910.38 : 682,978.14 = 268,555.88 : x
  2. Step 2: Convert to fraction form
    494,910.38/682,978.14 = 268,555.88/x
  3. Step 3: Cross multiply
    494,910.38x = 682,978.14 × 268,555.88
  4. Step 4: Simplify right side
    494,910.38x = 183,417,791,993.57
  5. Step 5: Solve for x
    x = 183,417,791,993.57/494,910.38
  6. Step 6: Final answer
    x = 370,608.10

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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.