Home / 213,904-321,171.38-119,318.96

Finding the Fourth Proportional to 213,904, 321,171.38 and 119,318.96

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Solution

The fourth proportional to 213,904, 321,171.38 and 119,318.96 is: 179,154.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,904 : 321,171.38 = 119,318.96 : x
  2. Step 2: Convert to fraction form
    213,904/321,171.38 = 119,318.96/x
  3. Step 3: Cross multiply
    213,904x = 321,171.38 × 119,318.96
  4. Step 4: Simplify right side
    213,904x = 38,321,835,043.36
  5. Step 5: Solve for x
    x = 38,321,835,043.36/213,904
  6. Step 6: Final answer
    x = 179,154.36

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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.