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Finding the Fourth Proportional to 353,999.97, 488,517.53 and 192,855.15

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Solution

The fourth proportional to 353,999.97, 488,517.53 and 192,855.15 is: 266,138.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,999.97 : 488,517.53 = 192,855.15 : x
  2. Step 2: Convert to fraction form
    353,999.97/488,517.53 = 192,855.15/x
  3. Step 3: Cross multiply
    353,999.97x = 488,517.53 × 192,855.15
  4. Step 4: Simplify right side
    353,999.97x = 94,213,120,561.50
  5. Step 5: Solve for x
    x = 94,213,120,561.50/353,999.97
  6. Step 6: Final answer
    x = 266,138.78

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1.5x scale

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.