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Finding the Fourth Proportional to 352,593.78, 486,579.42 and 201,690.78

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Solution

The fourth proportional to 352,593.78, 486,579.42 and 201,690.78 is: 278,333.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,593.78 : 486,579.42 = 201,690.78 : x
  2. Step 2: Convert to fraction form
    352,593.78/486,579.42 = 201,690.78/x
  3. Step 3: Cross multiply
    352,593.78x = 486,579.42 × 201,690.78
  4. Step 4: Simplify right side
    352,593.78x = 98,138,582,751.75
  5. Step 5: Solve for x
    x = 98,138,582,751.75/352,593.78
  6. Step 6: Final answer
    x = 278,333.28

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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.