Home / 287,105.56-396,205.08-178,169.34

Finding the Fourth Proportional to 287,105.56, 396,205.08 and 178,169.34

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Solution

The fourth proportional to 287,105.56, 396,205.08 and 178,169.34 is: 245,873.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,105.56 : 396,205.08 = 178,169.34 : x
  2. Step 2: Convert to fraction form
    287,105.56/396,205.08 = 178,169.34/x
  3. Step 3: Cross multiply
    287,105.56x = 396,205.08 × 178,169.34
  4. Step 4: Simplify right side
    287,105.56x = 70,591,597,608.25
  5. Step 5: Solve for x
    x = 70,591,597,608.25/287,105.56
  6. Step 6: Final answer
    x = 245,873.32

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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.