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Finding the Fourth Proportional to 327,636.86, 491,455.49 and 90,979.56

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Solution

The fourth proportional to 327,636.86, 491,455.49 and 90,979.56 is: 136,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,636.86 : 491,455.49 = 90,979.56 : x
  2. Step 2: Convert to fraction form
    327,636.86/491,455.49 = 90,979.56/x
  3. Step 3: Cross multiply
    327,636.86x = 491,455.49 × 90,979.56
  4. Step 4: Simplify right side
    327,636.86x = 44,712,403,784.89
  5. Step 5: Solve for x
    x = 44,712,403,784.89/327,636.86
  6. Step 6: Final answer
    x = 136,469.40

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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.