Home / 213,896.78-321,160.57-119,311.76

Finding the Fourth Proportional to 213,896.78, 321,160.57 and 119,311.76

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Solution

The fourth proportional to 213,896.78, 321,160.57 and 119,311.76 is: 179,143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,896.78 : 321,160.57 = 119,311.76 : x
  2. Step 2: Convert to fraction form
    213,896.78/321,160.57 = 119,311.76/x
  3. Step 3: Cross multiply
    213,896.78x = 321,160.57 × 119,311.76
  4. Step 4: Simplify right side
    213,896.78x = 38,318,232,849.30
  5. Step 5: Solve for x
    x = 38,318,232,849.30/213,896.78
  6. Step 6: Final answer
    x = 179,143.57

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1.5x scale

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.