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Finding the Fourth Proportional to 449,713, 620,605.56 and 248,509

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Solution

The fourth proportional to 449,713, 620,605.56 and 248,509 is: 342,943.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,713 : 620,605.56 = 248,509 : x
  2. Step 2: Convert to fraction form
    449,713/620,605.56 = 248,509/x
  3. Step 3: Cross multiply
    449,713x = 620,605.56 × 248,509
  4. Step 4: Simplify right side
    449,713x = 154,226,067,110.04
  5. Step 5: Solve for x
    x = 154,226,067,110.04/449,713
  6. Step 6: Final answer
    x = 342,943.32

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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.