Home / 387,200.25-579,556.62-206,834.72

Finding the Fourth Proportional to 387,200.25, 579,556.62 and 206,834.72

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Solution

The fourth proportional to 387,200.25, 579,556.62 and 206,834.72 is: 309,587.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,200.25 : 579,556.62 = 206,834.72 : x
  2. Step 2: Convert to fraction form
    387,200.25/579,556.62 = 206,834.72/x
  3. Step 3: Cross multiply
    387,200.25x = 579,556.62 × 206,834.72
  4. Step 4: Simplify right side
    387,200.25x = 119,872,428,324.06
  5. Step 5: Solve for x
    x = 119,872,428,324.06/387,200.25
  6. Step 6: Final answer
    x = 309,587.68

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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.