Home / 378,052.13-521,710.38-205,969.61

Finding the Fourth Proportional to 378,052.13, 521,710.38 and 205,969.61

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Solution

The fourth proportional to 378,052.13, 521,710.38 and 205,969.61 is: 284,237.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,052.13 : 521,710.38 = 205,969.61 : x
  2. Step 2: Convert to fraction form
    378,052.13/521,710.38 = 205,969.61/x
  3. Step 3: Cross multiply
    378,052.13x = 521,710.38 × 205,969.61
  4. Step 4: Simplify right side
    378,052.13x = 107,456,480,893.00
  5. Step 5: Solve for x
    x = 107,456,480,893.00/378,052.13
  6. Step 6: Final answer
    x = 284,237.21

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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.