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Finding the Fourth Proportional to 355,274.46, 490,263.27 and 194,121.90

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Solution

The fourth proportional to 355,274.46, 490,263.27 and 194,121.90 is: 267,879.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,274.46 : 490,263.27 = 194,121.90 : x
  2. Step 2: Convert to fraction form
    355,274.46/490,263.27 = 194,121.90/x
  3. Step 3: Cross multiply
    355,274.46x = 490,263.27 × 194,121.90
  4. Step 4: Simplify right side
    355,274.46x = 95,170,837,472.61
  5. Step 5: Solve for x
    x = 95,170,837,472.61/355,274.46
  6. Step 6: Final answer
    x = 267,879.76

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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.