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Finding the Fourth Proportional to 248,871.68, 343,443.26 and 135,694.43

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Solution

The fourth proportional to 248,871.68, 343,443.26 and 135,694.43 is: 187,258.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,871.68 : 343,443.26 = 135,694.43 : x
  2. Step 2: Convert to fraction form
    248,871.68/343,443.26 = 135,694.43/x
  3. Step 3: Cross multiply
    248,871.68x = 343,443.26 × 135,694.43
  4. Step 4: Simplify right side
    248,871.68x = 46,603,335,007.35
  5. Step 5: Solve for x
    x = 46,603,335,007.35/248,871.68
  6. Step 6: Final answer
    x = 187,258.49

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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.