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Finding the Fourth Proportional to 322,893,619.20, 484,340,428.80 and 225,958,780.80

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Solution

The fourth proportional to 322,893,619.20, 484,340,428.80 and 225,958,780.80 is: 338,938,171.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,893,619.20 : 484,340,428.80 = 225,958,780.80 : x
  2. Step 2: Convert to fraction form
    322,893,619.20/484,340,428.80 = 225,958,780.80/x
  3. Step 3: Cross multiply
    322,893,619.20x = 484,340,428.80 × 225,958,780.80
  4. Step 4: Simplify right side
    322,893,619.20x = 109,440,972,783,797,216
  5. Step 5: Solve for x
    x = 109,440,972,783,797,216/322,893,619.20
  6. Step 6: Final answer
    x = 338,938,171.20

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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.