Home / 378,202.96-521,919.03-208,437.04

Finding the Fourth Proportional to 378,202.96, 521,919.03 and 208,437.04

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Solution

The fourth proportional to 378,202.96, 521,919.03 and 208,437.04 is: 287,642.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,202.96 : 521,919.03 = 208,437.04 : x
  2. Step 2: Convert to fraction form
    378,202.96/521,919.03 = 208,437.04/x
  3. Step 3: Cross multiply
    378,202.96x = 521,919.03 × 208,437.04
  4. Step 4: Simplify right side
    378,202.96x = 108,787,257,732.87
  5. Step 5: Solve for x
    x = 108,787,257,732.87/378,202.96
  6. Step 6: Final answer
    x = 287,642.53

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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.