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Finding the Fourth Proportional to 355,298.20, 490,305.60 and 194,149.72

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Solution

The fourth proportional to 355,298.20, 490,305.60 and 194,149.72 is: 267,923.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,298.20 : 490,305.60 = 194,149.72 : x
  2. Step 2: Convert to fraction form
    355,298.20/490,305.60 = 194,149.72/x
  3. Step 3: Cross multiply
    355,298.20x = 490,305.60 × 194,149.72
  4. Step 4: Simplify right side
    355,298.20x = 95,192,694,954.43
  5. Step 5: Solve for x
    x = 95,192,694,954.43/355,298.20
  6. Step 6: Final answer
    x = 267,923.38

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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.