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Finding the Fourth Proportional to 299,447,992.80, 449,171,989.20 and 255,610,015.20

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Solution

The fourth proportional to 299,447,992.80, 449,171,989.20 and 255,610,015.20 is: 383,415,022.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,447,992.80 : 449,171,989.20 = 255,610,015.20 : x
  2. Step 2: Convert to fraction form
    299,447,992.80/449,171,989.20 = 255,610,015.20/x
  3. Step 3: Cross multiply
    299,447,992.80x = 449,171,989.20 × 255,610,015.20
  4. Step 4: Simplify right side
    299,447,992.80x = 114,812,858,986,826,224
  5. Step 5: Solve for x
    x = 114,812,858,986,826,224/299,447,992.80
  6. Step 6: Final answer
    x = 383,415,022.80

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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.