Home / 258,679.31-356,984.25-143,965.68

Finding the Fourth Proportional to 258,679.31, 356,984.25 and 143,965.68

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Solution

The fourth proportional to 258,679.31, 356,984.25 and 143,965.68 is: 198,676.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,679.31 : 356,984.25 = 143,965.68 : x
  2. Step 2: Convert to fraction form
    258,679.31/356,984.25 = 143,965.68/x
  3. Step 3: Cross multiply
    258,679.31x = 356,984.25 × 143,965.68
  4. Step 4: Simplify right side
    258,679.31x = 51,393,480,300.54
  5. Step 5: Solve for x
    x = 51,393,480,300.54/258,679.31
  6. Step 6: Final answer
    x = 198,676.43

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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.