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Finding the Fourth Proportional to 248,980.68, 343,591.20 and 135,801

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Solution

The fourth proportional to 248,980.68, 343,591.20 and 135,801 is: 187,404.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,980.68 : 343,591.20 = 135,801 : x
  2. Step 2: Convert to fraction form
    248,980.68/343,591.20 = 135,801/x
  3. Step 3: Cross multiply
    248,980.68x = 343,591.20 × 135,801
  4. Step 4: Simplify right side
    248,980.68x = 46,660,028,551.20
  5. Step 5: Solve for x
    x = 46,660,028,551.20/248,980.68
  6. Step 6: Final answer
    x = 187,404.21

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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.