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Finding the Fourth Proportional to 327,316.74, 490,954.71 and 156,659.66

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Solution

The fourth proportional to 327,316.74, 490,954.71 and 156,659.66 is: 234,979.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,316.74 : 490,954.71 = 156,659.66 : x
  2. Step 2: Convert to fraction form
    327,316.74/490,954.71 = 156,659.66/x
  3. Step 3: Cross multiply
    327,316.74x = 490,954.71 × 156,659.66
  4. Step 4: Simplify right side
    327,316.74x = 76,912,797,108.26
  5. Step 5: Solve for x
    x = 76,912,797,108.26/327,316.74
  6. Step 6: Final answer
    x = 234,979.73

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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.