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Finding the Fourth Proportional to 444,866.40, 667,234.80 and 129,290.40

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Solution

The fourth proportional to 444,866.40, 667,234.80 and 129,290.40 is: 193,916.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,866.40 : 667,234.80 = 129,290.40 : x
  2. Step 2: Convert to fraction form
    444,866.40/667,234.80 = 129,290.40/x
  3. Step 3: Cross multiply
    444,866.40x = 667,234.80 × 129,290.40
  4. Step 4: Simplify right side
    444,866.40x = 86,267,054,185.92
  5. Step 5: Solve for x
    x = 86,267,054,185.92/444,866.40
  6. Step 6: Final answer
    x = 193,916.77

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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.