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Finding the Fourth Proportional to 248,720.22, 343,223.89 and 135,540.54

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Solution

The fourth proportional to 248,720.22, 343,223.89 and 135,540.54 is: 187,040.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,720.22 : 343,223.89 = 135,540.54 : x
  2. Step 2: Convert to fraction form
    248,720.22/343,223.89 = 135,540.54/x
  3. Step 3: Cross multiply
    248,720.22x = 343,223.89 × 135,540.54
  4. Step 4: Simplify right side
    248,720.22x = 46,520,751,391.50
  5. Step 5: Solve for x
    x = 46,520,751,391.50/248,720.22
  6. Step 6: Final answer
    x = 187,040.49

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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.