Home / 212,198.82-318,298.29-54,427.26

Finding the Fourth Proportional to 212,198.82, 318,298.29 and 54,427.26

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Solution

The fourth proportional to 212,198.82, 318,298.29 and 54,427.26 is: 81,640.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,198.82 : 318,298.29 = 54,427.26 : x
  2. Step 2: Convert to fraction form
    212,198.82/318,298.29 = 54,427.26/x
  3. Step 3: Cross multiply
    212,198.82x = 318,298.29 × 54,427.26
  4. Step 4: Simplify right side
    212,198.82x = 17,324,103,787.39
  5. Step 5: Solve for x
    x = 17,324,103,787.39/212,198.82
  6. Step 6: Final answer
    x = 81,640.91

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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.