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Finding the Fourth Proportional to 300,650.32, 451,027.44 and 100,990

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Solution

The fourth proportional to 300,650.32, 451,027.44 and 100,990 is: 151,502.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,650.32 : 451,027.44 = 100,990 : x
  2. Step 2: Convert to fraction form
    300,650.32/451,027.44 = 100,990/x
  3. Step 3: Cross multiply
    300,650.32x = 451,027.44 × 100,990
  4. Step 4: Simplify right side
    300,650.32x = 45,549,261,165.60
  5. Step 5: Solve for x
    x = 45,549,261,165.60/300,650.32
  6. Step 6: Final answer
    x = 151,502.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.