Home / 638,046.15-957,218.06-211,550.78

Finding the Fourth Proportional to 638,046.15, 957,218.06 and 211,550.78

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Solution

The fourth proportional to 638,046.15, 957,218.06 and 211,550.78 is: 317,375.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,046.15 : 957,218.06 = 211,550.78 : x
  2. Step 2: Convert to fraction form
    638,046.15/957,218.06 = 211,550.78/x
  3. Step 3: Cross multiply
    638,046.15x = 957,218.06 × 211,550.78
  4. Step 4: Simplify right side
    638,046.15x = 202,500,221,379.24
  5. Step 5: Solve for x
    x = 202,500,221,379.24/638,046.15
  6. Step 6: Final answer
    x = 317,375.51

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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.