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Finding the Fourth Proportional to 449,497, 620,305.86 and 248,293

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Solution

The fourth proportional to 449,497, 620,305.86 and 248,293 is: 342,644.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,497 : 620,305.86 = 248,293 : x
  2. Step 2: Convert to fraction form
    449,497/620,305.86 = 248,293/x
  3. Step 3: Cross multiply
    449,497x = 620,305.86 × 248,293
  4. Step 4: Simplify right side
    449,497x = 154,017,602,896.98
  5. Step 5: Solve for x
    x = 154,017,602,896.98/449,497
  6. Step 6: Final answer
    x = 342,644.34

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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.