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Finding the Fourth Proportional to 393,287.11, 542,777.83 and 240,414.80

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Solution

The fourth proportional to 393,287.11, 542,777.83 and 240,414.80 is: 331,797.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,287.11 : 542,777.83 = 240,414.80 : x
  2. Step 2: Convert to fraction form
    393,287.11/542,777.83 = 240,414.80/x
  3. Step 3: Cross multiply
    393,287.11x = 542,777.83 × 240,414.80
  4. Step 4: Simplify right side
    393,287.11x = 130,491,823,443.88
  5. Step 5: Solve for x
    x = 130,491,823,443.88/393,287.11
  6. Step 6: Final answer
    x = 331,797.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.