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Finding the Fourth Proportional to 248,846.11, 343,407.80 and 135,668.86

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Solution

The fourth proportional to 248,846.11, 343,407.80 and 135,668.86 is: 187,223.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,846.11 : 343,407.80 = 135,668.86 : x
  2. Step 2: Convert to fraction form
    248,846.11/343,407.80 = 135,668.86/x
  3. Step 3: Cross multiply
    248,846.11x = 343,407.80 × 135,668.86
  4. Step 4: Simplify right side
    248,846.11x = 46,589,744,221.76
  5. Step 5: Solve for x
    x = 46,589,744,221.76/248,846.11
  6. Step 6: Final answer
    x = 187,223.12

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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.