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Finding the Fourth Proportional to 327,869.60, 491,497.20 and 256,752.80

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Solution

The fourth proportional to 327,869.60, 491,497.20 and 256,752.80 is: 384,888.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,869.60 : 491,497.20 = 256,752.80 : x
  2. Step 2: Convert to fraction form
    327,869.60/491,497.20 = 256,752.80/x
  3. Step 3: Cross multiply
    327,869.60x = 491,497.20 × 256,752.80
  4. Step 4: Simplify right side
    327,869.60x = 126,193,282,292.16
  5. Step 5: Solve for x
    x = 126,193,282,292.16/327,869.60
  6. Step 6: Final answer
    x = 384,888.63

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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.