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Finding the Fourth Proportional to 213,183.70, 319,606.86 and 80,049.13

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Solution

The fourth proportional to 213,183.70, 319,606.86 and 80,049.13 is: 120,010.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,183.70 : 319,606.86 = 80,049.13 : x
  2. Step 2: Convert to fraction form
    213,183.70/319,606.86 = 80,049.13/x
  3. Step 3: Cross multiply
    213,183.70x = 319,606.86 × 80,049.13
  4. Step 4: Simplify right side
    213,183.70x = 25,584,250,586.20
  5. Step 5: Solve for x
    x = 25,584,250,586.20/213,183.70
  6. Step 6: Final answer
    x = 120,010.35

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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.