Home / 285,979.10-394,487.20-178,362.30

Finding the Fourth Proportional to 285,979.10, 394,487.20 and 178,362.30

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Solution

The fourth proportional to 285,979.10, 394,487.20 and 178,362.30 is: 246,037.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,979.10 : 394,487.20 = 178,362.30 : x
  2. Step 2: Convert to fraction form
    285,979.10/394,487.20 = 178,362.30/x
  3. Step 3: Cross multiply
    285,979.10x = 394,487.20 × 178,362.30
  4. Step 4: Simplify right side
    285,979.10x = 70,361,643,420.75
  5. Step 5: Solve for x
    x = 70,361,643,420.75/285,979.10
  6. Step 6: Final answer
    x = 246,037.71

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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.