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Finding the Fourth Proportional to 383,657.49, 529,435.92 and 211,575.42

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Solution

The fourth proportional to 383,657.49, 529,435.92 and 211,575.42 is: 291,967.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,657.49 : 529,435.92 = 211,575.42 : x
  2. Step 2: Convert to fraction form
    383,657.49/529,435.92 = 211,575.42/x
  3. Step 3: Cross multiply
    383,657.49x = 529,435.92 × 211,575.42
  4. Step 4: Simplify right side
    383,657.49x = 112,015,627,137.09
  5. Step 5: Solve for x
    x = 112,015,627,137.09/383,657.49
  6. Step 6: Final answer
    x = 291,967.78

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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.