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Finding the Fourth Proportional to 444,116, 666,179.67 and 128,573.21

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Solution

The fourth proportional to 444,116, 666,179.67 and 128,573.21 is: 192,861.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,116 : 666,179.67 = 128,573.21 : x
  2. Step 2: Convert to fraction form
    444,116/666,179.67 = 128,573.21/x
  3. Step 3: Cross multiply
    444,116x = 666,179.67 × 128,573.21
  4. Step 4: Simplify right side
    444,116x = 85,652,858,608.64
  5. Step 5: Solve for x
    x = 85,652,858,608.64/444,116
  6. Step 6: Final answer
    x = 192,861.46

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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.