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Finding the Fourth Proportional to 353,996.80, 531,297.60 and 143,785.60

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Solution

The fourth proportional to 353,996.80, 531,297.60 and 143,785.60 is: 215,801.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,996.80 : 531,297.60 = 143,785.60 : x
  2. Step 2: Convert to fraction form
    353,996.80/531,297.60 = 143,785.60/x
  3. Step 3: Cross multiply
    353,996.80x = 531,297.60 × 143,785.60
  4. Step 4: Simplify right side
    353,996.80x = 76,392,944,194.56
  5. Step 5: Solve for x
    x = 76,392,944,194.56/353,996.80
  6. Step 6: Final answer
    x = 215,801.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.