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Finding the Fourth Proportional to 299,861.76, 449,792.46 and 78,245.76

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Solution

The fourth proportional to 299,861.76, 449,792.46 and 78,245.76 is: 117,368.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,861.76 : 449,792.46 = 78,245.76 : x
  2. Step 2: Convert to fraction form
    299,861.76/449,792.46 = 78,245.76/x
  3. Step 3: Cross multiply
    299,861.76x = 449,792.46 × 78,245.76
  4. Step 4: Simplify right side
    299,861.76x = 35,194,352,874.97
  5. Step 5: Solve for x
    x = 35,194,352,874.97/299,861.76
  6. Step 6: Final answer
    x = 117,368.59

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1.5x scale

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.