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Finding the Fourth Proportional to 383,418.75, 529,093.80 and 211,327.24

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Solution

The fourth proportional to 383,418.75, 529,093.80 and 211,327.24 is: 291,618.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,418.75 : 529,093.80 = 211,327.24 : x
  2. Step 2: Convert to fraction form
    383,418.75/529,093.80 = 211,327.24/x
  3. Step 3: Cross multiply
    383,418.75x = 529,093.80 × 211,327.24
  4. Step 4: Simplify right side
    383,418.75x = 111,811,934,206.86
  5. Step 5: Solve for x
    x = 111,811,934,206.86/383,418.75
  6. Step 6: Final answer
    x = 291,618.33

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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.