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Finding the Fourth Proportional to 355,282.20, 490,274.80 and 194,142.80

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Solution

The fourth proportional to 355,282.20, 490,274.80 and 194,142.80 is: 267,909.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,282.20 : 490,274.80 = 194,142.80 : x
  2. Step 2: Convert to fraction form
    355,282.20/490,274.80 = 194,142.80/x
  3. Step 3: Cross multiply
    355,282.20x = 490,274.80 × 194,142.80
  4. Step 4: Simplify right side
    355,282.20x = 95,183,322,441.44
  5. Step 5: Solve for x
    x = 95,183,322,441.44/355,282.20
  6. Step 6: Final answer
    x = 267,909.07

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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.