Home / 214,390.08-321,578.64-81,290.88

Finding the Fourth Proportional to 214,390.08, 321,578.64 and 81,290.88

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Solution

The fourth proportional to 214,390.08, 321,578.64 and 81,290.88 is: 121,933.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,390.08 : 321,578.64 = 81,290.88 : x
  2. Step 2: Convert to fraction form
    214,390.08/321,578.64 = 81,290.88/x
  3. Step 3: Cross multiply
    214,390.08x = 321,578.64 × 81,290.88
  4. Step 4: Simplify right side
    214,390.08x = 26,141,410,634.80
  5. Step 5: Solve for x
    x = 26,141,410,634.80/214,390.08
  6. Step 6: Final answer
    x = 121,933.86

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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.