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Finding the Fourth Proportional to 327,425.60, 491,138.40 and 105,809.60

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Solution

The fourth proportional to 327,425.60, 491,138.40 and 105,809.60 is: 158,714.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,425.60 : 491,138.40 = 105,809.60 : x
  2. Step 2: Convert to fraction form
    327,425.60/491,138.40 = 105,809.60/x
  3. Step 3: Cross multiply
    327,425.60x = 491,138.40 × 105,809.60
  4. Step 4: Simplify right side
    327,425.60x = 51,967,157,648.64
  5. Step 5: Solve for x
    x = 51,967,157,648.64/327,425.60
  6. Step 6: Final answer
    x = 158,714.40

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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.