Home / 455,217.87-682,963.50-215,514.47

Finding the Fourth Proportional to 455,217.87, 682,963.50 and 215,514.47

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Solution

The fourth proportional to 455,217.87, 682,963.50 and 215,514.47 is: 323,336.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,217.87 : 682,963.50 = 215,514.47 : x
  2. Step 2: Convert to fraction form
    455,217.87/682,963.50 = 215,514.47/x
  3. Step 3: Cross multiply
    455,217.87x = 682,963.50 × 215,514.47
  4. Step 4: Simplify right side
    455,217.87x = 147,188,518,035.16
  5. Step 5: Solve for x
    x = 147,188,518,035.16/455,217.87
  6. Step 6: Final answer
    x = 323,336.42

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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.