Home / 213,905-321,172.88-119,319.96

Finding the Fourth Proportional to 213,905, 321,172.88 and 119,319.96

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Solution

The fourth proportional to 213,905, 321,172.88 and 119,319.96 is: 179,155.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,905 : 321,172.88 = 119,319.96 : x
  2. Step 2: Convert to fraction form
    213,905/321,172.88 = 119,319.96/x
  3. Step 3: Cross multiply
    213,905x = 321,172.88 × 119,319.96
  4. Step 4: Simplify right side
    213,905x = 38,322,335,194.68
  5. Step 5: Solve for x
    x = 38,322,335,194.68/213,905
  6. Step 6: Final answer
    x = 179,155.86

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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.