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Finding the Fourth Proportional to 322,418.78, 445,132.26 and 213,615.23

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Solution

The fourth proportional to 322,418.78, 445,132.26 and 213,615.23 is: 294,917.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,418.78 : 445,132.26 = 213,615.23 : x
  2. Step 2: Convert to fraction form
    322,418.78/445,132.26 = 213,615.23/x
  3. Step 3: Cross multiply
    322,418.78x = 445,132.26 × 213,615.23
  4. Step 4: Simplify right side
    322,418.78x = 95,087,027,874.66
  5. Step 5: Solve for x
    x = 95,087,027,874.66/322,418.78
  6. Step 6: Final answer
    x = 294,917.77

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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.