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Finding the Fourth Proportional to 444,139.40, 665,978.70 and 163,512.20

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Solution

The fourth proportional to 444,139.40, 665,978.70 and 163,512.20 is: 245,183.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,139.40 : 665,978.70 = 163,512.20 : x
  2. Step 2: Convert to fraction form
    444,139.40/665,978.70 = 163,512.20/x
  3. Step 3: Cross multiply
    444,139.40x = 665,978.70 × 163,512.20
  4. Step 4: Simplify right side
    444,139.40x = 108,895,642,390.14
  5. Step 5: Solve for x
    x = 108,895,642,390.14/444,139.40
  6. Step 6: Final answer
    x = 245,183.48

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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.