Home / 378,169.60-521,849.28-208,403.68

Finding the Fourth Proportional to 378,169.60, 521,849.28 and 208,403.68

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Solution

The fourth proportional to 378,169.60, 521,849.28 and 208,403.68 is: 287,583.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,169.60 : 521,849.28 = 208,403.68 : x
  2. Step 2: Convert to fraction form
    378,169.60/521,849.28 = 208,403.68/x
  3. Step 3: Cross multiply
    378,169.60x = 521,849.28 × 208,403.68
  4. Step 4: Simplify right side
    378,169.60x = 108,755,310,357.35
  5. Step 5: Solve for x
    x = 108,755,310,357.35/378,169.60
  6. Step 6: Final answer
    x = 287,583.43

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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.