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Finding the Fourth Proportional to 248,791.09, 343,331.72 and 135,613.84

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Solution

The fourth proportional to 248,791.09, 343,331.72 and 135,613.84 is: 187,147.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,791.09 : 343,331.72 = 135,613.84 : x
  2. Step 2: Convert to fraction form
    248,791.09/343,331.72 = 135,613.84/x
  3. Step 3: Cross multiply
    248,791.09x = 343,331.72 × 135,613.84
  4. Step 4: Simplify right side
    248,791.09x = 46,560,532,943.00
  5. Step 5: Solve for x
    x = 46,560,532,943.00/248,791.09
  6. Step 6: Final answer
    x = 187,147.11

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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.