Home / 378,190.25-521,902.54-208,424.37

Finding the Fourth Proportional to 378,190.25, 521,902.54 and 208,424.37

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Solution

The fourth proportional to 378,190.25, 521,902.54 and 208,424.37 is: 287,625.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,190.25 : 521,902.54 = 208,424.37 : x
  2. Step 2: Convert to fraction form
    378,190.25/521,902.54 = 208,424.37/x
  3. Step 3: Cross multiply
    378,190.25x = 521,902.54 × 208,424.37
  4. Step 4: Simplify right side
    378,190.25x = 108,777,210,318.57
  5. Step 5: Solve for x
    x = 108,777,210,318.57/378,190.25
  6. Step 6: Final answer
    x = 287,625.63

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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.