Home / 312,745,137.78-431,588,343.42-173,515,567.26

Finding the Fourth Proportional to 312,745,137.78, 431,588,343.42 and 173,515,567.26

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Solution

The fourth proportional to 312,745,137.78, 431,588,343.42 and 173,515,567.26 is: 239,451,512.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,745,137.78 : 431,588,343.42 = 173,515,567.26 : x
  2. Step 2: Convert to fraction form
    312,745,137.78/431,588,343.42 = 173,515,567.26/x
  3. Step 3: Cross multiply
    312,745,137.78x = 431,588,343.42 × 173,515,567.26
  4. Step 4: Simplify right side
    312,745,137.78x = 74,887,296,231,324,992
  5. Step 5: Solve for x
    x = 74,887,296,231,324,992/312,745,137.78
  6. Step 6: Final answer
    x = 239,451,512.38

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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.