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Finding the Fourth Proportional to 449,834.40, 620,669.16 and 268,605

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Solution

The fourth proportional to 449,834.40, 620,669.16 and 268,605 is: 370,613.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,834.40 : 620,669.16 = 268,605 : x
  2. Step 2: Convert to fraction form
    449,834.40/620,669.16 = 268,605/x
  3. Step 3: Cross multiply
    449,834.40x = 620,669.16 × 268,605
  4. Step 4: Simplify right side
    449,834.40x = 166,714,839,721.80
  5. Step 5: Solve for x
    x = 166,714,839,721.80/449,834.40
  6. Step 6: Final answer
    x = 370,613.81

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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.