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Finding the Fourth Proportional to 445,271.24, 667,914.16 and 129,745.48

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Solution

The fourth proportional to 445,271.24, 667,914.16 and 129,745.48 is: 194,620.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,271.24 : 667,914.16 = 129,745.48 : x
  2. Step 2: Convert to fraction form
    445,271.24/667,914.16 = 129,745.48/x
  3. Step 3: Cross multiply
    445,271.24x = 667,914.16 × 129,745.48
  4. Step 4: Simplify right side
    445,271.24x = 86,658,843,288.00
  5. Step 5: Solve for x
    x = 86,658,843,288.00/445,271.24
  6. Step 6: Final answer
    x = 194,620.35

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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.