Home / 378,213.96-521,934.21-208,448.04

Finding the Fourth Proportional to 378,213.96, 521,934.21 and 208,448.04

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Solution

The fourth proportional to 378,213.96, 521,934.21 and 208,448.04 is: 287,657.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,213.96 : 521,934.21 = 208,448.04 : x
  2. Step 2: Convert to fraction form
    378,213.96/521,934.21 = 208,448.04/x
  3. Step 3: Cross multiply
    378,213.96x = 521,934.21 × 208,448.04
  4. Step 4: Simplify right side
    378,213.96x = 108,796,163,083.45
  5. Step 5: Solve for x
    x = 108,796,163,083.45/378,213.96
  6. Step 6: Final answer
    x = 287,657.71

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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.