Home / 269,934.52-405,147.48-143,680.78

Finding the Fourth Proportional to 269,934.52, 405,147.48 and 143,680.78

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Solution

The fourth proportional to 269,934.52, 405,147.48 and 143,680.78 is: 215,651.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,934.52 : 405,147.48 = 143,680.78 : x
  2. Step 2: Convert to fraction form
    269,934.52/405,147.48 = 143,680.78/x
  3. Step 3: Cross multiply
    269,934.52x = 405,147.48 × 143,680.78
  4. Step 4: Simplify right side
    269,934.52x = 58,211,905,941.43
  5. Step 5: Solve for x
    x = 58,211,905,941.43/269,934.52
  6. Step 6: Final answer
    x = 215,651.95

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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.