Home / 394,144.22-543,918.90-212,856.09

Finding the Fourth Proportional to 394,144.22, 543,918.90 and 212,856.09

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Solution

The fourth proportional to 394,144.22, 543,918.90 and 212,856.09 is: 293,741.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,144.22 : 543,918.90 = 212,856.09 : x
  2. Step 2: Convert to fraction form
    394,144.22/543,918.90 = 212,856.09/x
  3. Step 3: Cross multiply
    394,144.22x = 543,918.90 × 212,856.09
  4. Step 4: Simplify right side
    394,144.22x = 115,776,450,331.10
  5. Step 5: Solve for x
    x = 115,776,450,331.10/394,144.22
  6. Step 6: Final answer
    x = 293,741.34

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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.