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Finding the Fourth Proportional to 449,911.22, 620,884.88 and 268,638.98

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Solution

The fourth proportional to 449,911.22, 620,884.88 and 268,638.98 is: 370,726.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,911.22 : 620,884.88 = 268,638.98 : x
  2. Step 2: Convert to fraction form
    449,911.22/620,884.88 = 268,638.98/x
  3. Step 3: Cross multiply
    449,911.22x = 620,884.88 × 268,638.98
  4. Step 4: Simplify right side
    449,911.22x = 166,793,880,860.62
  5. Step 5: Solve for x
    x = 166,793,880,860.62/449,911.22
  6. Step 6: Final answer
    x = 370,726.21

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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.