Home / 212,961.15-318,895.38-206,654.49

Finding the Fourth Proportional to 212,961.15, 318,895.38 and 206,654.49

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Solution

The fourth proportional to 212,961.15, 318,895.38 and 206,654.49 is: 309,451.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,961.15 : 318,895.38 = 206,654.49 : x
  2. Step 2: Convert to fraction form
    212,961.15/318,895.38 = 206,654.49/x
  3. Step 3: Cross multiply
    212,961.15x = 318,895.38 × 206,654.49
  4. Step 4: Simplify right side
    212,961.15x = 65,901,162,117.26
  5. Step 5: Solve for x
    x = 65,901,162,117.26/212,961.15
  6. Step 6: Final answer
    x = 309,451.57

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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.