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Finding the Fourth Proportional to 352,620.80, 529,233.60 and 142,409.60

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Solution

The fourth proportional to 352,620.80, 529,233.60 and 142,409.60 is: 213,736.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,620.80 : 529,233.60 = 142,409.60 : x
  2. Step 2: Convert to fraction form
    352,620.80/529,233.60 = 142,409.60/x
  3. Step 3: Cross multiply
    352,620.80x = 529,233.60 × 142,409.60
  4. Step 4: Simplify right side
    352,620.80x = 75,367,945,282.56
  5. Step 5: Solve for x
    x = 75,367,945,282.56/352,620.80
  6. Step 6: Final answer
    x = 213,736.53

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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.