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Finding the Fourth Proportional to 383,952.90, 529,825.80 and 211,877.73

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Solution

The fourth proportional to 383,952.90, 529,825.80 and 211,877.73 is: 292,375.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,952.90 : 529,825.80 = 211,877.73 : x
  2. Step 2: Convert to fraction form
    383,952.90/529,825.80 = 211,877.73/x
  3. Step 3: Cross multiply
    383,952.90x = 529,825.80 × 211,877.73
  4. Step 4: Simplify right side
    383,952.90x = 112,258,287,799.43
  5. Step 5: Solve for x
    x = 112,258,287,799.43/383,952.90
  6. Step 6: Final answer
    x = 292,375.15

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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.