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Finding the Fourth Proportional to 352,930.37, 529,351.78 and 208,921.88

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Solution

The fourth proportional to 352,930.37, 529,351.78 and 208,921.88 is: 313,356.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,930.37 : 529,351.78 = 208,921.88 : x
  2. Step 2: Convert to fraction form
    352,930.37/529,351.78 = 208,921.88/x
  3. Step 3: Cross multiply
    352,930.37x = 529,351.78 × 208,921.88
  4. Step 4: Simplify right side
    352,930.37x = 110,593,165,367.58
  5. Step 5: Solve for x
    x = 110,593,165,367.58/352,930.37
  6. Step 6: Final answer
    x = 313,356.90

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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.