Home / 287,086.92-395,769.36-201,939.72

Finding the Fourth Proportional to 287,086.92, 395,769.36 and 201,939.72

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Solution

The fourth proportional to 287,086.92, 395,769.36 and 201,939.72 is: 278,388.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,086.92 : 395,769.36 = 201,939.72 : x
  2. Step 2: Convert to fraction form
    287,086.92/395,769.36 = 201,939.72/x
  3. Step 3: Cross multiply
    287,086.92x = 395,769.36 × 201,939.72
  4. Step 4: Simplify right side
    287,086.92x = 79,921,553,742.98
  5. Step 5: Solve for x
    x = 79,921,553,742.98/287,086.92
  6. Step 6: Final answer
    x = 278,388.00

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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.