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Finding the Fourth Proportional to 299,560,662.80, 449,340,994.20 and 72,625,878.80

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Solution

The fourth proportional to 299,560,662.80, 449,340,994.20 and 72,625,878.80 is: 108,938,818.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,560,662.80 : 449,340,994.20 = 72,625,878.80 : x
  2. Step 2: Convert to fraction form
    299,560,662.80/449,340,994.20 = 72,625,878.80/x
  3. Step 3: Cross multiply
    299,560,662.80x = 449,340,994.20 × 72,625,878.80
  4. Step 4: Simplify right side
    299,560,662.80x = 32,633,784,584,640,700
  5. Step 5: Solve for x
    x = 32,633,784,584,640,700/299,560,662.80
  6. Step 6: Final answer
    x = 108,938,818.20

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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.