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Finding the Fourth Proportional to 355,174.71, 490,148.33 and 194,040.20

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Solution

The fourth proportional to 355,174.71, 490,148.33 and 194,040.20 is: 267,779.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,174.71 : 490,148.33 = 194,040.20 : x
  2. Step 2: Convert to fraction form
    355,174.71/490,148.33 = 194,040.20/x
  3. Step 3: Cross multiply
    355,174.71x = 490,148.33 × 194,040.20
  4. Step 4: Simplify right side
    355,174.71x = 95,108,476,561.92
  5. Step 5: Solve for x
    x = 95,108,476,561.92/355,174.71
  6. Step 6: Final answer
    x = 267,779.42

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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.