Home / 378,976.77-522,984.74-209,207.25

Finding the Fourth Proportional to 378,976.77, 522,984.74 and 209,207.25

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Solution

The fourth proportional to 378,976.77, 522,984.74 and 209,207.25 is: 288,704.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,976.77 : 522,984.74 = 209,207.25 : x
  2. Step 2: Convert to fraction form
    378,976.77/522,984.74 = 209,207.25/x
  3. Step 3: Cross multiply
    378,976.77x = 522,984.74 × 209,207.25
  4. Step 4: Simplify right side
    378,976.77x = 109,412,198,201.33
  5. Step 5: Solve for x
    x = 109,412,198,201.33/378,976.77
  6. Step 6: Final answer
    x = 288,704.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.