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Finding the Fourth Proportional to 355,318.09, 490,345.37 and 194,179.93

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Solution

The fourth proportional to 355,318.09, 490,345.37 and 194,179.93 is: 267,971.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,318.09 : 490,345.37 = 194,179.93 : x
  2. Step 2: Convert to fraction form
    355,318.09/490,345.37 = 194,179.93/x
  3. Step 3: Cross multiply
    355,318.09x = 490,345.37 × 194,179.93
  4. Step 4: Simplify right side
    355,318.09x = 95,215,229,622.42
  5. Step 5: Solve for x
    x = 95,215,229,622.42/355,318.09
  6. Step 6: Final answer
    x = 267,971.80

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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.