Home / 258,102.74-356,170.20-143,389.43

Finding the Fourth Proportional to 258,102.74, 356,170.20 and 143,389.43

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Solution

The fourth proportional to 258,102.74, 356,170.20 and 143,389.43 is: 197,870.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,102.74 : 356,170.20 = 143,389.43 : x
  2. Step 2: Convert to fraction form
    258,102.74/356,170.20 = 143,389.43/x
  3. Step 3: Cross multiply
    258,102.74x = 356,170.20 × 143,389.43
  4. Step 4: Simplify right side
    258,102.74x = 51,071,040,180.14
  5. Step 5: Solve for x
    x = 51,071,040,180.14/258,102.74
  6. Step 6: Final answer
    x = 197,870.98

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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.