Home / 431,379.24-647,073-115,836.18

Finding the Fourth Proportional to 431,379.24, 647,073 and 115,836.18

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Solution

The fourth proportional to 431,379.24, 647,073 and 115,836.18 is: 173,755.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,379.24 : 647,073 = 115,836.18 : x
  2. Step 2: Convert to fraction form
    431,379.24/647,073 = 115,836.18/x
  3. Step 3: Cross multiply
    431,379.24x = 647,073 × 115,836.18
  4. Step 4: Simplify right side
    431,379.24x = 74,954,464,501.14
  5. Step 5: Solve for x
    x = 74,954,464,501.14/431,379.24
  6. Step 6: Final answer
    x = 173,755.38

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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.