Home / 269,918.49-405,123.45-143,664.75

Finding the Fourth Proportional to 269,918.49, 405,123.45 and 143,664.75

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Solution

The fourth proportional to 269,918.49, 405,123.45 and 143,664.75 is: 215,627.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,918.49 : 405,123.45 = 143,664.75 : x
  2. Step 2: Convert to fraction form
    269,918.49/405,123.45 = 143,664.75/x
  3. Step 3: Cross multiply
    269,918.49x = 405,123.45 × 143,664.75
  4. Step 4: Simplify right side
    269,918.49x = 58,201,959,163.39
  5. Step 5: Solve for x
    x = 58,201,959,163.39/269,918.49
  6. Step 6: Final answer
    x = 215,627.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.