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Finding the Fourth Proportional to 248,993.50, 343,623.18 and 140,131.84

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Solution

The fourth proportional to 248,993.50, 343,623.18 and 140,131.84 is: 193,388.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,993.50 : 343,623.18 = 140,131.84 : x
  2. Step 2: Convert to fraction form
    248,993.50/343,623.18 = 140,131.84/x
  3. Step 3: Cross multiply
    248,993.50x = 343,623.18 × 140,131.84
  4. Step 4: Simplify right side
    248,993.50x = 48,152,548,480.05
  5. Step 5: Solve for x
    x = 48,152,548,480.05/248,993.50
  6. Step 6: Final answer
    x = 193,388.78

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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.