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Finding the Fourth Proportional to 299,700,372.60, 449,550,558.90 and 84,289,620.60

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Solution

The fourth proportional to 299,700,372.60, 449,550,558.90 and 84,289,620.60 is: 126,434,430.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,700,372.60 : 449,550,558.90 = 84,289,620.60 : x
  2. Step 2: Convert to fraction form
    299,700,372.60/449,550,558.90 = 84,289,620.60/x
  3. Step 3: Cross multiply
    299,700,372.60x = 449,550,558.90 × 84,289,620.60
  4. Step 4: Simplify right side
    299,700,372.60x = 37,892,446,050,198,952
  5. Step 5: Solve for x
    x = 37,892,446,050,198,952/299,700,372.60
  6. Step 6: Final answer
    x = 126,434,430.90

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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.