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Finding the Fourth Proportional to 279,794,644.40, 419,691,966.60 and 221,344,007.60

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Solution

The fourth proportional to 279,794,644.40, 419,691,966.60 and 221,344,007.60 is: 332,016,011.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,794,644.40 : 419,691,966.60 = 221,344,007.60 : x
  2. Step 2: Convert to fraction form
    279,794,644.40/419,691,966.60 = 221,344,007.60/x
  3. Step 3: Cross multiply
    279,794,644.40x = 419,691,966.60 × 221,344,007.60
  4. Step 4: Simplify right side
    279,794,644.40x = 92,896,301,844,769,344
  5. Step 5: Solve for x
    x = 92,896,301,844,769,344/279,794,644.40
  6. Step 6: Final answer
    x = 332,016,011.40

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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.