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Finding the Fourth Proportional to 376,073.80, 518,978.80 and 203,991.32

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Solution

The fourth proportional to 376,073.80, 518,978.80 and 203,991.32 is: 281,506.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,073.80 : 518,978.80 = 203,991.32 : x
  2. Step 2: Convert to fraction form
    376,073.80/518,978.80 = 203,991.32/x
  3. Step 3: Cross multiply
    376,073.80x = 518,978.80 × 203,991.32
  4. Step 4: Simplify right side
    376,073.80x = 105,867,170,464.02
  5. Step 5: Solve for x
    x = 105,867,170,464.02/376,073.80
  6. Step 6: Final answer
    x = 281,506.37

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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.