Home / 399,896.18-551,857.82-218,610.28

Finding the Fourth Proportional to 399,896.18, 551,857.82 and 218,610.28

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Solution

The fourth proportional to 399,896.18, 551,857.82 and 218,610.28 is: 301,682.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,896.18 : 551,857.82 = 218,610.28 : x
  2. Step 2: Convert to fraction form
    399,896.18/551,857.82 = 218,610.28/x
  3. Step 3: Cross multiply
    399,896.18x = 551,857.82 × 218,610.28
  4. Step 4: Simplify right side
    399,896.18x = 120,641,792,550.39
  5. Step 5: Solve for x
    x = 120,641,792,550.39/399,896.18
  6. Step 6: Final answer
    x = 301,682.78

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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.