Home / 378,910.26-522,896.19-209,144.42

Finding the Fourth Proportional to 378,910.26, 522,896.19 and 209,144.42

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Solution

The fourth proportional to 378,910.26, 522,896.19 and 209,144.42 is: 288,619.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,910.26 : 522,896.19 = 209,144.42 : x
  2. Step 2: Convert to fraction form
    378,910.26/522,896.19 = 209,144.42/x
  3. Step 3: Cross multiply
    378,910.26x = 522,896.19 × 209,144.42
  4. Step 4: Simplify right side
    378,910.26x = 109,360,820,377.76
  5. Step 5: Solve for x
    x = 109,360,820,377.76/378,910.26
  6. Step 6: Final answer
    x = 288,619.32

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1.5x scale

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.