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Finding the Fourth Proportional to 444,090.30, 666,134.64 and 128,546.70

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Solution

The fourth proportional to 444,090.30, 666,134.64 and 128,546.70 is: 192,819.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,090.30 : 666,134.64 = 128,546.70 : x
  2. Step 2: Convert to fraction form
    444,090.30/666,134.64 = 128,546.70/x
  3. Step 3: Cross multiply
    444,090.30x = 666,134.64 × 128,546.70
  4. Step 4: Simplify right side
    444,090.30x = 85,629,409,727.69
  5. Step 5: Solve for x
    x = 85,629,409,727.69/444,090.30
  6. Step 6: Final answer
    x = 192,819.82

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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.