Home / 431,379.07-647,072.70-115,835.97

Finding the Fourth Proportional to 431,379.07, 647,072.70 and 115,835.97

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Solution

The fourth proportional to 431,379.07, 647,072.70 and 115,835.97 is: 173,755.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,379.07 : 647,072.70 = 115,835.97 : x
  2. Step 2: Convert to fraction form
    431,379.07/647,072.70 = 115,835.97/x
  3. Step 3: Cross multiply
    431,379.07x = 647,072.70 × 115,835.97
  4. Step 4: Simplify right side
    431,379.07x = 74,954,296,508.73
  5. Step 5: Solve for x
    x = 74,954,296,508.73/431,379.07
  6. Step 6: Final answer
    x = 173,755.06

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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.