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Finding the Fourth Proportional to 444,904.68, 667,422.09 and 129,320.58

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Solution

The fourth proportional to 444,904.68, 667,422.09 and 129,320.58 is: 193,999.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,904.68 : 667,422.09 = 129,320.58 : x
  2. Step 2: Convert to fraction form
    444,904.68/667,422.09 = 129,320.58/x
  3. Step 3: Cross multiply
    444,904.68x = 667,422.09 × 129,320.58
  4. Step 4: Simplify right side
    444,904.68x = 86,311,411,783.61
  5. Step 5: Solve for x
    x = 86,311,411,783.61/444,904.68
  6. Step 6: Final answer
    x = 193,999.78

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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.