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Finding the Fourth Proportional to 251,544.69, 347,137.11 and 138,367.44

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Solution

The fourth proportional to 251,544.69, 347,137.11 and 138,367.44 is: 190,950.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,544.69 : 347,137.11 = 138,367.44 : x
  2. Step 2: Convert to fraction form
    251,544.69/347,137.11 = 138,367.44/x
  3. Step 3: Cross multiply
    251,544.69x = 347,137.11 × 138,367.44
  4. Step 4: Simplify right side
    251,544.69x = 48,032,473,239.70
  5. Step 5: Solve for x
    x = 48,032,473,239.70/251,544.69
  6. Step 6: Final answer
    x = 190,950.06

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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.