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Finding the Fourth Proportional to 638,453.26, 957,471.49 and 211,874.49

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Solution

The fourth proportional to 638,453.26, 957,471.49 and 211,874.49 is: 317,742.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,453.26 : 957,471.49 = 211,874.49 : x
  2. Step 2: Convert to fraction form
    638,453.26/957,471.49 = 211,874.49/x
  3. Step 3: Cross multiply
    638,453.26x = 957,471.49 × 211,874.49
  4. Step 4: Simplify right side
    638,453.26x = 202,863,778,845.93
  5. Step 5: Solve for x
    x = 202,863,778,845.93/638,453.26
  6. Step 6: Final answer
    x = 317,742.57

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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.