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Finding the Fourth Proportional to 449,146.76, 674,072.10 and 313,327.40

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Solution

The fourth proportional to 449,146.76, 674,072.10 and 313,327.40 is: 470,236.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,146.76 : 674,072.10 = 313,327.40 : x
  2. Step 2: Convert to fraction form
    449,146.76/674,072.10 = 313,327.40/x
  3. Step 3: Cross multiply
    449,146.76x = 674,072.10 × 313,327.40
  4. Step 4: Simplify right side
    449,146.76x = 211,205,258,505.54
  5. Step 5: Solve for x
    x = 211,205,258,505.54/449,146.76
  6. Step 6: Final answer
    x = 470,236.63

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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.