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Finding the Fourth Proportional to 355,105.61, 490,042.83 and 193,960.76

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Solution

The fourth proportional to 355,105.61, 490,042.83 and 193,960.76 is: 267,664.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,105.61 : 490,042.83 = 193,960.76 : x
  2. Step 2: Convert to fraction form
    355,105.61/490,042.83 = 193,960.76/x
  3. Step 3: Cross multiply
    355,105.61x = 490,042.83 × 193,960.76
  4. Step 4: Simplify right side
    355,105.61x = 95,049,079,739.35
  5. Step 5: Solve for x
    x = 95,049,079,739.35/355,105.61
  6. Step 6: Final answer
    x = 267,664.26

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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.