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Finding the Fourth Proportional to 449,729.20, 620,625.90 and 248,525.20

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Solution

The fourth proportional to 449,729.20, 620,625.90 and 248,525.20 is: 342,964.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,729.20 : 620,625.90 = 248,525.20 : x
  2. Step 2: Convert to fraction form
    449,729.20/620,625.90 = 248,525.20/x
  3. Step 3: Cross multiply
    449,729.20x = 620,625.90 × 248,525.20
  4. Step 4: Simplify right side
    449,729.20x = 154,241,175,922.68
  5. Step 5: Solve for x
    x = 154,241,175,922.68/449,729.20
  6. Step 6: Final answer
    x = 342,964.56

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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.