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Finding the Fourth Proportional to 449,569.85, 620,449.30 and 245,651.77

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Solution

The fourth proportional to 449,569.85, 620,449.30 and 245,651.77 is: 339,022.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,569.85 : 620,449.30 = 245,651.77 : x
  2. Step 2: Convert to fraction form
    449,569.85/620,449.30 = 245,651.77/x
  3. Step 3: Cross multiply
    449,569.85x = 620,449.30 × 245,651.77
  4. Step 4: Simplify right side
    449,569.85x = 152,414,469,822.89
  5. Step 5: Solve for x
    x = 152,414,469,822.89/449,569.85
  6. Step 6: Final answer
    x = 339,022.89

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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.