Home / 309,974.97-427,759.16-172,146.59

Finding the Fourth Proportional to 309,974.97, 427,759.16 and 172,146.59

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Solution

The fourth proportional to 309,974.97, 427,759.16 and 172,146.59 is: 237,558.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,974.97 : 427,759.16 = 172,146.59 : x
  2. Step 2: Convert to fraction form
    309,974.97/427,759.16 = 172,146.59/x
  3. Step 3: Cross multiply
    309,974.97x = 427,759.16 × 172,146.59
  4. Step 4: Simplify right side
    309,974.97x = 73,637,277,735.74
  5. Step 5: Solve for x
    x = 73,637,277,735.74/309,974.97
  6. Step 6: Final answer
    x = 237,558.79

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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.