Home / 378,940.37-522,941.33-209,170.85

Finding the Fourth Proportional to 378,940.37, 522,941.33 and 209,170.85

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Solution

The fourth proportional to 378,940.37, 522,941.33 and 209,170.85 is: 288,657.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,940.37 : 522,941.33 = 209,170.85 : x
  2. Step 2: Convert to fraction form
    378,940.37/522,941.33 = 209,170.85/x
  3. Step 3: Cross multiply
    378,940.37x = 522,941.33 × 209,170.85
  4. Step 4: Simplify right side
    378,940.37x = 109,384,080,404.45
  5. Step 5: Solve for x
    x = 109,384,080,404.45/378,940.37
  6. Step 6: Final answer
    x = 288,657.77

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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.