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Finding the Fourth Proportional to 248,854.64, 343,426.92 and 135,679.28

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Solution

The fourth proportional to 248,854.64, 343,426.92 and 135,679.28 is: 187,241.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,854.64 : 343,426.92 = 135,679.28 : x
  2. Step 2: Convert to fraction form
    248,854.64/343,426.92 = 135,679.28/x
  3. Step 3: Cross multiply
    248,854.64x = 343,426.92 × 135,679.28
  4. Step 4: Simplify right side
    248,854.64x = 46,595,917,238.22
  5. Step 5: Solve for x
    x = 46,595,917,238.22/248,854.64
  6. Step 6: Final answer
    x = 187,241.50

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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.