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Finding the Fourth Proportional to 451,065.41, 622,234.05 and 278,928.46

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Solution

The fourth proportional to 451,065.41, 622,234.05 and 278,928.46 is: 384,775.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,065.41 : 622,234.05 = 278,928.46 : x
  2. Step 2: Convert to fraction form
    451,065.41/622,234.05 = 278,928.46/x
  3. Step 3: Cross multiply
    451,065.41x = 622,234.05 × 278,928.46
  4. Step 4: Simplify right side
    451,065.41x = 173,558,786,626.85
  5. Step 5: Solve for x
    x = 173,558,786,626.85/451,065.41
  6. Step 6: Final answer
    x = 384,775.21

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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.