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Finding the Fourth Proportional to 248,988.54, 343,601.19 and 135,808.86

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Solution

The fourth proportional to 248,988.54, 343,601.19 and 135,808.86 is: 187,414.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,988.54 : 343,601.19 = 135,808.86 : x
  2. Step 2: Convert to fraction form
    248,988.54/343,601.19 = 135,808.86/x
  3. Step 3: Cross multiply
    248,988.54x = 343,601.19 × 135,808.86
  4. Step 4: Simplify right side
    248,988.54x = 46,664,085,908.54
  5. Step 5: Solve for x
    x = 46,664,085,908.54/248,988.54
  6. Step 6: Final answer
    x = 187,414.59

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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.