Home / 394,091.36-543,787.24-221,984.72

Finding the Fourth Proportional to 394,091.36, 543,787.24 and 221,984.72

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Solution

The fourth proportional to 394,091.36, 543,787.24 and 221,984.72 is: 306,305.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,091.36 : 543,787.24 = 221,984.72 : x
  2. Step 2: Convert to fraction form
    394,091.36/543,787.24 = 221,984.72/x
  3. Step 3: Cross multiply
    394,091.36x = 543,787.24 × 221,984.72
  4. Step 4: Simplify right side
    394,091.36x = 120,712,458,210.97
  5. Step 5: Solve for x
    x = 120,712,458,210.97/394,091.36
  6. Step 6: Final answer
    x = 306,305.77

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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.