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Finding the Fourth Proportional to 449,616.96, 620,418.32 and 268,295.28

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Solution

The fourth proportional to 449,616.96, 620,418.32 and 268,295.28 is: 370,215.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,616.96 : 620,418.32 = 268,295.28 : x
  2. Step 2: Convert to fraction form
    449,616.96/620,418.32 = 268,295.28/x
  3. Step 3: Cross multiply
    449,616.96x = 620,418.32 × 268,295.28
  4. Step 4: Simplify right side
    449,616.96x = 166,455,306,881.53
  5. Step 5: Solve for x
    x = 166,455,306,881.53/449,616.96
  6. Step 6: Final answer
    x = 370,215.81

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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.