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Finding the Fourth Proportional to 375,979.32, 518,859.54 and 206,213.04

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Solution

The fourth proportional to 375,979.32, 518,859.54 and 206,213.04 is: 284,578.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,979.32 : 518,859.54 = 206,213.04 : x
  2. Step 2: Convert to fraction form
    375,979.32/518,859.54 = 206,213.04/x
  3. Step 3: Cross multiply
    375,979.32x = 518,859.54 × 206,213.04
  4. Step 4: Simplify right side
    375,979.32x = 106,995,603,076.40
  5. Step 5: Solve for x
    x = 106,995,603,076.40/375,979.32
  6. Step 6: Final answer
    x = 284,578.43

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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.