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Finding the Fourth Proportional to 355,305.48, 490,320.55 and 194,161.54

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Solution

The fourth proportional to 355,305.48, 490,320.55 and 194,161.54 is: 267,942.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,305.48 : 490,320.55 = 194,161.54 : x
  2. Step 2: Convert to fraction form
    355,305.48/490,320.55 = 194,161.54/x
  3. Step 3: Cross multiply
    355,305.48x = 490,320.55 × 194,161.54
  4. Step 4: Simplify right side
    355,305.48x = 95,201,393,081.65
  5. Step 5: Solve for x
    x = 95,201,393,081.65/355,305.48
  6. Step 6: Final answer
    x = 267,942.37

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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.