Home / 378,205.08-521,934.30-208,450.20

Finding the Fourth Proportional to 378,205.08, 521,934.30 and 208,450.20

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Solution

The fourth proportional to 378,205.08, 521,934.30 and 208,450.20 is: 287,667.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,205.08 : 521,934.30 = 208,450.20 : x
  2. Step 2: Convert to fraction form
    378,205.08/521,934.30 = 208,450.20/x
  3. Step 3: Cross multiply
    378,205.08x = 521,934.30 × 208,450.20
  4. Step 4: Simplify right side
    378,205.08x = 108,797,309,221.86
  5. Step 5: Solve for x
    x = 108,797,309,221.86/378,205.08
  6. Step 6: Final answer
    x = 287,667.50

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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.