Home / 258,505.91-356,733.05-143,782.09

Finding the Fourth Proportional to 258,505.91, 356,733.05 and 143,782.09

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Solution

The fourth proportional to 258,505.91, 356,733.05 and 143,782.09 is: 198,416.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,505.91 : 356,733.05 = 143,782.09 : x
  2. Step 2: Convert to fraction form
    258,505.91/356,733.05 = 143,782.09/x
  3. Step 3: Cross multiply
    258,505.91x = 356,733.05 × 143,782.09
  4. Step 4: Simplify right side
    258,505.91x = 51,291,821,890.33
  5. Step 5: Solve for x
    x = 51,291,821,890.33/258,505.91
  6. Step 6: Final answer
    x = 198,416.43

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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.