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Finding the Fourth Proportional to 239,469.66, 359,202.78 and 70,990.68

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Solution

The fourth proportional to 239,469.66, 359,202.78 and 70,990.68 is: 106,485.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,469.66 : 359,202.78 = 70,990.68 : x
  2. Step 2: Convert to fraction form
    239,469.66/359,202.78 = 70,990.68/x
  3. Step 3: Cross multiply
    239,469.66x = 359,202.78 × 70,990.68
  4. Step 4: Simplify right side
    239,469.66x = 25,500,049,610.09
  5. Step 5: Solve for x
    x = 25,500,049,610.09/239,469.66
  6. Step 6: Final answer
    x = 106,485.51

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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.