Home / 378,013.91-521,643.66-205,928.44

Finding the Fourth Proportional to 378,013.91, 521,643.66 and 205,928.44

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Solution

The fourth proportional to 378,013.91, 521,643.66 and 205,928.44 is: 284,172.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,013.91 : 521,643.66 = 205,928.44 : x
  2. Step 2: Convert to fraction form
    378,013.91/521,643.66 = 205,928.44/x
  3. Step 3: Cross multiply
    378,013.91x = 521,643.66 × 205,928.44
  4. Step 4: Simplify right side
    378,013.91x = 107,421,263,063.35
  5. Step 5: Solve for x
    x = 107,421,263,063.35/378,013.91
  6. Step 6: Final answer
    x = 284,172.78

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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.