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Finding the Fourth Proportional to 383,388.87, 529,107.06 and 211,337.43

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Solution

The fourth proportional to 383,388.87, 529,107.06 and 211,337.43 is: 291,662.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,388.87 : 529,107.06 = 211,337.43 : x
  2. Step 2: Convert to fraction form
    383,388.87/529,107.06 = 211,337.43/x
  3. Step 3: Cross multiply
    383,388.87x = 529,107.06 × 211,337.43
  4. Step 4: Simplify right side
    383,388.87x = 111,820,126,255.26
  5. Step 5: Solve for x
    x = 111,820,126,255.26/383,388.87
  6. Step 6: Final answer
    x = 291,662.42

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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.