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Finding the Fourth Proportional to 449,591.71, 620,429.23 and 245,638.25

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Solution

The fourth proportional to 449,591.71, 620,429.23 and 245,638.25 is: 338,976.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,591.71 : 620,429.23 = 245,638.25 : x
  2. Step 2: Convert to fraction form
    449,591.71/620,429.23 = 245,638.25/x
  3. Step 3: Cross multiply
    449,591.71x = 620,429.23 × 245,638.25
  4. Step 4: Simplify right side
    449,591.71x = 152,401,150,306.05
  5. Step 5: Solve for x
    x = 152,401,150,306.05/449,591.71
  6. Step 6: Final answer
    x = 338,976.78

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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.