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Finding the Fourth Proportional to 449,673.20, 620,549.10 and 248,469.20

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Solution

The fourth proportional to 449,673.20, 620,549.10 and 248,469.20 is: 342,887.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,673.20 : 620,549.10 = 248,469.20 : x
  2. Step 2: Convert to fraction form
    449,673.20/620,549.10 = 248,469.20/x
  3. Step 3: Cross multiply
    449,673.20x = 620,549.10 × 248,469.20
  4. Step 4: Simplify right side
    449,673.20x = 154,187,335,334.98
  5. Step 5: Solve for x
    x = 154,187,335,334.98/449,673.20
  6. Step 6: Final answer
    x = 342,887.54

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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.