Home / 378,890.92-522,832.22-209,114.10

Finding the Fourth Proportional to 378,890.92, 522,832.22 and 209,114.10

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Solution

The fourth proportional to 378,890.92, 522,832.22 and 209,114.10 is: 288,556.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,890.92 : 522,832.22 = 209,114.10 : x
  2. Step 2: Convert to fraction form
    378,890.92/522,832.22 = 209,114.10/x
  3. Step 3: Cross multiply
    378,890.92x = 522,832.22 × 209,114.10
  4. Step 4: Simplify right side
    378,890.92x = 109,331,589,136.30
  5. Step 5: Solve for x
    x = 109,331,589,136.30/378,890.92
  6. Step 6: Final answer
    x = 288,556.90

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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.