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Finding the Fourth Proportional to 251,968.82, 347,716.99 and 138,791.57

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Solution

The fourth proportional to 251,968.82, 347,716.99 and 138,791.57 is: 191,532.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,968.82 : 347,716.99 = 138,791.57 : x
  2. Step 2: Convert to fraction form
    251,968.82/347,716.99 = 138,791.57/x
  3. Step 3: Cross multiply
    251,968.82x = 347,716.99 × 138,791.57
  4. Step 4: Simplify right side
    251,968.82x = 48,260,186,263.82
  5. Step 5: Solve for x
    x = 48,260,186,263.82/251,968.82
  6. Step 6: Final answer
    x = 191,532.37

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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.