Home / 214,943.87-322,418.89-81,831.43

Finding the Fourth Proportional to 214,943.87, 322,418.89 and 81,831.43

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Solution

The fourth proportional to 214,943.87, 322,418.89 and 81,831.43 is: 122,748.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,943.87 : 322,418.89 = 81,831.43 : x
  2. Step 2: Convert to fraction form
    214,943.87/322,418.89 = 81,831.43/x
  3. Step 3: Cross multiply
    214,943.87x = 322,418.89 × 81,831.43
  4. Step 4: Simplify right side
    214,943.87x = 26,383,998,087.90
  5. Step 5: Solve for x
    x = 26,383,998,087.90/214,943.87
  6. Step 6: Final answer
    x = 122,748.32

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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.