Home / 214,427.19-321,517.73-81,222.49

Finding the Fourth Proportional to 214,427.19, 321,517.73 and 81,222.49

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Solution

The fourth proportional to 214,427.19, 321,517.73 and 81,222.49 is: 121,787.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,427.19 : 321,517.73 = 81,222.49 : x
  2. Step 2: Convert to fraction form
    214,427.19/321,517.73 = 81,222.49/x
  3. Step 3: Cross multiply
    214,427.19x = 321,517.73 × 81,222.49
  4. Step 4: Simplify right side
    214,427.19x = 26,114,470,609.75
  5. Step 5: Solve for x
    x = 26,114,470,609.75/214,427.19
  6. Step 6: Final answer
    x = 121,787.12

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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.