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Finding the Fourth Proportional to 383,851.22, 575,878.91 and 131,131.31

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Solution

The fourth proportional to 383,851.22, 575,878.91 and 131,131.31 is: 196,731.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,851.22 : 575,878.91 = 131,131.31 : x
  2. Step 2: Convert to fraction form
    383,851.22/575,878.91 = 131,131.31/x
  3. Step 3: Cross multiply
    383,851.22x = 575,878.91 × 131,131.31
  4. Step 4: Simplify right side
    383,851.22x = 75,515,752,334.62
  5. Step 5: Solve for x
    x = 75,515,752,334.62/383,851.22
  6. Step 6: Final answer
    x = 196,731.83

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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.