Home / 258,201.38-356,310.20-143,479.67

Finding the Fourth Proportional to 258,201.38, 356,310.20 and 143,479.67

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Solution

The fourth proportional to 258,201.38, 356,310.20 and 143,479.67 is: 197,997.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,201.38 : 356,310.20 = 143,479.67 : x
  2. Step 2: Convert to fraction form
    258,201.38/356,310.20 = 143,479.67/x
  3. Step 3: Cross multiply
    258,201.38x = 356,310.20 × 143,479.67
  4. Step 4: Simplify right side
    258,201.38x = 51,123,267,414.68
  5. Step 5: Solve for x
    x = 51,123,267,414.68/258,201.38
  6. Step 6: Final answer
    x = 197,997.66

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1.5x scale

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.