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Finding the Fourth Proportional to 239,644.89, 359,405.69 and 71,125.29

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Solution

The fourth proportional to 239,644.89, 359,405.69 and 71,125.29 is: 106,669.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,644.89 : 359,405.69 = 71,125.29 : x
  2. Step 2: Convert to fraction form
    239,644.89/359,405.69 = 71,125.29/x
  3. Step 3: Cross multiply
    239,644.89x = 359,405.69 × 71,125.29
  4. Step 4: Simplify right side
    239,644.89x = 25,562,833,573.27
  5. Step 5: Solve for x
    x = 25,562,833,573.27/239,644.89
  6. Step 6: Final answer
    x = 106,669.64

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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.