Home / 449,669.84-619,845.30-306,183.20

Finding the Fourth Proportional to 449,669.84, 619,845.30 and 306,183.20

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Solution

The fourth proportional to 449,669.84, 619,845.30 and 306,183.20 is: 422,056.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,669.84 : 619,845.30 = 306,183.20 : x
  2. Step 2: Convert to fraction form
    449,669.84/619,845.30 = 306,183.20/x
  3. Step 3: Cross multiply
    449,669.84x = 619,845.30 × 306,183.20
  4. Step 4: Simplify right side
    449,669.84x = 189,786,214,359.73
  5. Step 5: Solve for x
    x = 189,786,214,359.73/449,669.84
  6. Step 6: Final answer
    x = 422,056.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.