Home / 378,201.96-521,917.65-208,436.04

Finding the Fourth Proportional to 378,201.96, 521,917.65 and 208,436.04

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Solution

The fourth proportional to 378,201.96, 521,917.65 and 208,436.04 is: 287,641.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,201.96 : 521,917.65 = 208,436.04 : x
  2. Step 2: Convert to fraction form
    378,201.96/521,917.65 = 208,436.04/x
  3. Step 3: Cross multiply
    378,201.96x = 521,917.65 × 208,436.04
  4. Step 4: Simplify right side
    378,201.96x = 108,786,448,172.11
  5. Step 5: Solve for x
    x = 108,786,448,172.11/378,201.96
  6. Step 6: Final answer
    x = 287,641.15

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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.