Home / 214,376.40-321,334.20-81,205.20

Finding the Fourth Proportional to 214,376.40, 321,334.20 and 81,205.20

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Solution

The fourth proportional to 214,376.40, 321,334.20 and 81,205.20 is: 121,720.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,376.40 : 321,334.20 = 81,205.20 : x
  2. Step 2: Convert to fraction form
    214,376.40/321,334.20 = 81,205.20/x
  3. Step 3: Cross multiply
    214,376.40x = 321,334.20 × 81,205.20
  4. Step 4: Simplify right side
    214,376.40x = 26,094,007,977.84
  5. Step 5: Solve for x
    x = 26,094,007,977.84/214,376.40
  6. Step 6: Final answer
    x = 121,720.53

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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.