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Finding the Fourth Proportional to 444,642.40, 667,060.80 and 145,136.80

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Solution

The fourth proportional to 444,642.40, 667,060.80 and 145,136.80 is: 217,736.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,642.40 : 667,060.80 = 145,136.80 : x
  2. Step 2: Convert to fraction form
    444,642.40/667,060.80 = 145,136.80/x
  3. Step 3: Cross multiply
    444,642.40x = 667,060.80 × 145,136.80
  4. Step 4: Simplify right side
    444,642.40x = 96,815,069,917.44
  5. Step 5: Solve for x
    x = 96,815,069,917.44/444,642.40
  6. Step 6: Final answer
    x = 217,736.93

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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.