Home / 378,131.93-521,815.32-206,051.37

Finding the Fourth Proportional to 378,131.93, 521,815.32 and 206,051.37

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Solution

The fourth proportional to 378,131.93, 521,815.32 and 206,051.37 is: 284,347.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,131.93 : 521,815.32 = 206,051.37 : x
  2. Step 2: Convert to fraction form
    378,131.93/521,815.32 = 206,051.37/x
  3. Step 3: Cross multiply
    378,131.93x = 521,815.32 × 206,051.37
  4. Step 4: Simplify right side
    378,131.93x = 107,520,761,572.99
  5. Step 5: Solve for x
    x = 107,520,761,572.99/378,131.93
  6. Step 6: Final answer
    x = 284,347.22

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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.