Home / 213,894.27-321,156.81-119,309.25

Finding the Fourth Proportional to 213,894.27, 321,156.81 and 119,309.25

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Solution

The fourth proportional to 213,894.27, 321,156.81 and 119,309.25 is: 179,139.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,894.27 : 321,156.81 = 119,309.25 : x
  2. Step 2: Convert to fraction form
    213,894.27/321,156.81 = 119,309.25/x
  3. Step 3: Cross multiply
    213,894.27x = 321,156.81 × 119,309.25
  4. Step 4: Simplify right side
    213,894.27x = 38,316,978,133.49
  5. Step 5: Solve for x
    x = 38,316,978,133.49/213,894.27
  6. Step 6: Final answer
    x = 179,139.81

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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.