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Finding the Fourth Proportional to 239,853.38, 359,717.34 and 71,328.29

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Solution

The fourth proportional to 239,853.38, 359,717.34 and 71,328.29 is: 106,973.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,853.38 : 359,717.34 = 71,328.29 : x
  2. Step 2: Convert to fraction form
    239,853.38/359,717.34 = 71,328.29/x
  3. Step 3: Cross multiply
    239,853.38x = 359,717.34 × 71,328.29
  4. Step 4: Simplify right side
    239,853.38x = 25,658,022,745.55
  5. Step 5: Solve for x
    x = 25,658,022,745.55/239,853.38
  6. Step 6: Final answer
    x = 106,973.78

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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.