Home / 261,021.92-391,134.33-194,138.60

Finding the Fourth Proportional to 261,021.92, 391,134.33 and 194,138.60

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Solution

The fourth proportional to 261,021.92, 391,134.33 and 194,138.60 is: 290,911.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,021.92 : 391,134.33 = 194,138.60 : x
  2. Step 2: Convert to fraction form
    261,021.92/391,134.33 = 194,138.60/x
  3. Step 3: Cross multiply
    261,021.92x = 391,134.33 × 194,138.60
  4. Step 4: Simplify right side
    261,021.92x = 75,934,269,282.47
  5. Step 5: Solve for x
    x = 75,934,269,282.47/261,021.92
  6. Step 6: Final answer
    x = 290,911.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.