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Finding the Fourth Proportional to 376,202.78, 519,152.96 and 212,857.54

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Solution

The fourth proportional to 376,202.78, 519,152.96 and 212,857.54 is: 293,739.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,202.78 : 519,152.96 = 212,857.54 : x
  2. Step 2: Convert to fraction form
    376,202.78/519,152.96 = 212,857.54/x
  3. Step 3: Cross multiply
    376,202.78x = 519,152.96 × 212,857.54
  4. Step 4: Simplify right side
    376,202.78x = 110,505,621,949.32
  5. Step 5: Solve for x
    x = 110,505,621,949.32/376,202.78
  6. Step 6: Final answer
    x = 293,739.51

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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.