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Finding the Fourth Proportional to 322,874.91, 445,418.30 and 208,190.39

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Solution

The fourth proportional to 322,874.91, 445,418.30 and 208,190.39 is: 287,206.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,874.91 : 445,418.30 = 208,190.39 : x
  2. Step 2: Convert to fraction form
    322,874.91/445,418.30 = 208,190.39/x
  3. Step 3: Cross multiply
    322,874.91x = 445,418.30 × 208,190.39
  4. Step 4: Simplify right side
    322,874.91x = 92,731,810,177.90
  5. Step 5: Solve for x
    x = 92,731,810,177.90/322,874.91
  6. Step 6: Final answer
    x = 287,206.62

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1.5x scale

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.