Home / 394,182.16-543,935.66-222,128.12

Finding the Fourth Proportional to 394,182.16, 543,935.66 and 222,128.12

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Solution

The fourth proportional to 394,182.16, 543,935.66 and 222,128.12 is: 306,516.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,182.16 : 543,935.66 = 222,128.12 : x
  2. Step 2: Convert to fraction form
    394,182.16/543,935.66 = 222,128.12/x
  3. Step 3: Cross multiply
    394,182.16x = 543,935.66 × 222,128.12
  4. Step 4: Simplify right side
    394,182.16x = 120,823,405,805.96
  5. Step 5: Solve for x
    x = 120,823,405,805.96/394,182.16
  6. Step 6: Final answer
    x = 306,516.68

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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.