Home / 378,003.06-521,645.14-208,240.02

Finding the Fourth Proportional to 378,003.06, 521,645.14 and 208,240.02

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Solution

The fourth proportional to 378,003.06, 521,645.14 and 208,240.02 is: 287,371.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,003.06 : 521,645.14 = 208,240.02 : x
  2. Step 2: Convert to fraction form
    378,003.06/521,645.14 = 208,240.02/x
  3. Step 3: Cross multiply
    378,003.06x = 521,645.14 × 208,240.02
  4. Step 4: Simplify right side
    378,003.06x = 108,627,394,386.50
  5. Step 5: Solve for x
    x = 108,627,394,386.50/378,003.06
  6. Step 6: Final answer
    x = 287,371.73

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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.