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Finding the Fourth Proportional to 239,791.21, 359,608.94 and 79,824.18

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Solution

The fourth proportional to 239,791.21, 359,608.94 and 79,824.18 is: 119,710.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,791.21 : 359,608.94 = 79,824.18 : x
  2. Step 2: Convert to fraction form
    239,791.21/359,608.94 = 79,824.18/x
  3. Step 3: Cross multiply
    239,791.21x = 359,608.94 × 79,824.18
  4. Step 4: Simplify right side
    239,791.21x = 28,705,487,607.20
  5. Step 5: Solve for x
    x = 28,705,487,607.20/239,791.21
  6. Step 6: Final answer
    x = 119,710.34

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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.