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Finding the Fourth Proportional to 327,489.60, 491,493.60 and 127,905.60

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Solution

The fourth proportional to 327,489.60, 491,493.60 and 127,905.60 is: 191,959.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,489.60 : 491,493.60 = 127,905.60 : x
  2. Step 2: Convert to fraction form
    327,489.60/491,493.60 = 127,905.60/x
  3. Step 3: Cross multiply
    327,489.60x = 491,493.60 × 127,905.60
  4. Step 4: Simplify right side
    327,489.60x = 62,864,783,804.16
  5. Step 5: Solve for x
    x = 62,864,783,804.16/327,489.60
  6. Step 6: Final answer
    x = 191,959.63

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1.5x scale

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.