Home / 311,729.14-430,183.20-173,909.26

Finding the Fourth Proportional to 311,729.14, 430,183.20 and 173,909.26

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Solution

The fourth proportional to 311,729.14, 430,183.20 and 173,909.26 is: 239,993.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,729.14 : 430,183.20 = 173,909.26 : x
  2. Step 2: Convert to fraction form
    311,729.14/430,183.20 = 173,909.26/x
  3. Step 3: Cross multiply
    311,729.14x = 430,183.20 × 173,909.26
  4. Step 4: Simplify right side
    311,729.14x = 74,812,841,976.43
  5. Step 5: Solve for x
    x = 74,812,841,976.43/311,729.14
  6. Step 6: Final answer
    x = 239,993.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.