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Finding the Fourth Proportional to 444,015.90, 665,258.40 and 206,872.20

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Solution

The fourth proportional to 444,015.90, 665,258.40 and 206,872.20 is: 309,951.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,015.90 : 665,258.40 = 206,872.20 : x
  2. Step 2: Convert to fraction form
    444,015.90/665,258.40 = 206,872.20/x
  3. Step 3: Cross multiply
    444,015.90x = 665,258.40 × 206,872.20
  4. Step 4: Simplify right side
    444,015.90x = 137,623,468,776.48
  5. Step 5: Solve for x
    x = 137,623,468,776.48/444,015.90
  6. Step 6: Final answer
    x = 309,951.67

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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.