Home / 212,633.30-318,839.21-100,283.35

Finding the Fourth Proportional to 212,633.30, 318,839.21 and 100,283.35

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Solution

The fourth proportional to 212,633.30, 318,839.21 and 100,283.35 is: 150,372.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,633.30 : 318,839.21 = 100,283.35 : x
  2. Step 2: Convert to fraction form
    212,633.30/318,839.21 = 100,283.35/x
  3. Step 3: Cross multiply
    212,633.30x = 318,839.21 × 100,283.35
  4. Step 4: Simplify right side
    212,633.30x = 31,974,262,791.64
  5. Step 5: Solve for x
    x = 31,974,262,791.64/212,633.30
  6. Step 6: Final answer
    x = 150,372.79

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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.