Home / 258,481.03-356,700.31-143,758.57

Finding the Fourth Proportional to 258,481.03, 356,700.31 and 143,758.57

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Solution

The fourth proportional to 258,481.03, 356,700.31 and 143,758.57 is: 198,384.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,481.03 : 356,700.31 = 143,758.57 : x
  2. Step 2: Convert to fraction form
    258,481.03/356,700.31 = 143,758.57/x
  3. Step 3: Cross multiply
    258,481.03x = 356,700.31 × 143,758.57
  4. Step 4: Simplify right side
    258,481.03x = 51,278,726,484.16
  5. Step 5: Solve for x
    x = 51,278,726,484.16/258,481.03
  6. Step 6: Final answer
    x = 198,384.87

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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.