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Finding the Fourth Proportional to 239,796.21, 330,922.82 and 130,906.16

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Solution

The fourth proportional to 239,796.21, 330,922.82 and 130,906.16 is: 180,652.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,796.21 : 330,922.82 = 130,906.16 : x
  2. Step 2: Convert to fraction form
    239,796.21/330,922.82 = 130,906.16/x
  3. Step 3: Cross multiply
    239,796.21x = 330,922.82 × 130,906.16
  4. Step 4: Simplify right side
    239,796.21x = 43,319,835,122.53
  5. Step 5: Solve for x
    x = 43,319,835,122.53/239,796.21
  6. Step 6: Final answer
    x = 180,652.71

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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.