Home / 258,328.22-356,481.78-143,606.60

Finding the Fourth Proportional to 258,328.22, 356,481.78 and 143,606.60

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Solution

The fourth proportional to 258,328.22, 356,481.78 and 143,606.60 is: 198,170.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,328.22 : 356,481.78 = 143,606.60 : x
  2. Step 2: Convert to fraction form
    258,328.22/356,481.78 = 143,606.60/x
  3. Step 3: Cross multiply
    258,328.22x = 356,481.78 × 143,606.60
  4. Step 4: Simplify right side
    258,328.22x = 51,193,136,387.75
  5. Step 5: Solve for x
    x = 51,193,136,387.75/258,328.22
  6. Step 6: Final answer
    x = 198,170.90

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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.