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Finding the Fourth Proportional to 353,991.60, 488,478.60 and 200,998.80

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Solution

The fourth proportional to 353,991.60, 488,478.60 and 200,998.80 is: 277,361.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,991.60 : 488,478.60 = 200,998.80 : x
  2. Step 2: Convert to fraction form
    353,991.60/488,478.60 = 200,998.80/x
  3. Step 3: Cross multiply
    353,991.60x = 488,478.60 × 200,998.80
  4. Step 4: Simplify right side
    353,991.60x = 98,183,612,425.68
  5. Step 5: Solve for x
    x = 98,183,612,425.68/353,991.60
  6. Step 6: Final answer
    x = 277,361.42

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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.