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Finding the Fourth Proportional to 355,081.50, 490,012.45 and 193,936.93

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Solution

The fourth proportional to 355,081.50, 490,012.45 and 193,936.93 is: 267,632.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,081.50 : 490,012.45 = 193,936.93 : x
  2. Step 2: Convert to fraction form
    355,081.50/490,012.45 = 193,936.93/x
  3. Step 3: Cross multiply
    355,081.50x = 490,012.45 × 193,936.93
  4. Step 4: Simplify right side
    355,081.50x = 95,031,508,504.91
  5. Step 5: Solve for x
    x = 95,031,508,504.91/355,081.50
  6. Step 6: Final answer
    x = 267,632.95

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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.