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Finding the Fourth Proportional to 299,657,288.80, 449,515,870.80 and 81,311,096.80

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Solution

The fourth proportional to 299,657,288.80, 449,515,870.80 and 81,311,096.80 is: 121,974,768.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,657,288.80 : 449,515,870.80 = 81,311,096.80 : x
  2. Step 2: Convert to fraction form
    299,657,288.80/449,515,870.80 = 81,311,096.80/x
  3. Step 3: Cross multiply
    299,657,288.80x = 449,515,870.80 × 81,311,096.80
  4. Step 4: Simplify right side
    299,657,288.80x = 36,550,628,483,755,096
  5. Step 5: Solve for x
    x = 36,550,628,483,755,096/299,657,288.80
  6. Step 6: Final answer
    x = 121,974,768.68

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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.