Home / 214,338.58-321,513.87-81,193.78

Finding the Fourth Proportional to 214,338.58, 321,513.87 and 81,193.78

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Solution

The fourth proportional to 214,338.58, 321,513.87 and 81,193.78 is: 121,792.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,338.58 : 321,513.87 = 81,193.78 : x
  2. Step 2: Convert to fraction form
    214,338.58/321,513.87 = 81,193.78/x
  3. Step 3: Cross multiply
    214,338.58x = 321,513.87 × 81,193.78
  4. Step 4: Simplify right side
    214,338.58x = 26,104,926,427.73
  5. Step 5: Solve for x
    x = 26,104,926,427.73/214,338.58
  6. Step 6: Final answer
    x = 121,792.94

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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.