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Finding the Fourth Proportional to 319,308.52, 440,629.92 and 181,469.50

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Solution

The fourth proportional to 319,308.52, 440,629.92 and 181,469.50 is: 250,418.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,308.52 : 440,629.92 = 181,469.50 : x
  2. Step 2: Convert to fraction form
    319,308.52/440,629.92 = 181,469.50/x
  3. Step 3: Cross multiply
    319,308.52x = 440,629.92 × 181,469.50
  4. Step 4: Simplify right side
    319,308.52x = 79,960,891,267.44
  5. Step 5: Solve for x
    x = 79,960,891,267.44/319,308.52
  6. Step 6: Final answer
    x = 250,418.91

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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.