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Finding the Fourth Proportional to 355,135.76, 490,066.08 and 193,958.72

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Solution

The fourth proportional to 355,135.76, 490,066.08 and 193,958.72 is: 267,651.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,135.76 : 490,066.08 = 193,958.72 : x
  2. Step 2: Convert to fraction form
    355,135.76/490,066.08 = 193,958.72/x
  3. Step 3: Cross multiply
    355,135.76x = 490,066.08 × 193,958.72
  4. Step 4: Simplify right side
    355,135.76x = 95,052,589,592.22
  5. Step 5: Solve for x
    x = 95,052,589,592.22/355,135.76
  6. Step 6: Final answer
    x = 267,651.42

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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.