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Finding the Fourth Proportional to 299,378,999.80, 449,068,499.70 and 299,378,999.80

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Solution

The fourth proportional to 299,378,999.80, 449,068,499.70 and 299,378,999.80 is: 449,068,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,378,999.80 : 449,068,499.70 = 299,378,999.80 : x
  2. Step 2: Convert to fraction form
    299,378,999.80/449,068,499.70 = 299,378,999.80/x
  3. Step 3: Cross multiply
    299,378,999.80x = 449,068,499.70 × 299,378,999.80
  4. Step 4: Simplify right side
    299,378,999.80x = 134,441,678,281,872,608
  5. Step 5: Solve for x
    x = 134,441,678,281,872,608/299,378,999.80
  6. Step 6: Final answer
    x = 449,068,499.70

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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.