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Finding the Fourth Proportional to 263,595.20, 395,421.60 and 255,300.80

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Solution

The fourth proportional to 263,595.20, 395,421.60 and 255,300.80 is: 382,979.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,595.20 : 395,421.60 = 255,300.80 : x
  2. Step 2: Convert to fraction form
    263,595.20/395,421.60 = 255,300.80/x
  3. Step 3: Cross multiply
    263,595.20x = 395,421.60 × 255,300.80
  4. Step 4: Simplify right side
    263,595.20x = 100,951,450,817.28
  5. Step 5: Solve for x
    x = 100,951,450,817.28/263,595.20
  6. Step 6: Final answer
    x = 382,979.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.