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Finding the Fourth Proportional to 335,998.20, 503,997.30 and 285,259.80

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Solution

The fourth proportional to 335,998.20, 503,997.30 and 285,259.80 is: 427,889.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,998.20 : 503,997.30 = 285,259.80 : x
  2. Step 2: Convert to fraction form
    335,998.20/503,997.30 = 285,259.80/x
  3. Step 3: Cross multiply
    335,998.20x = 503,997.30 × 285,259.80
  4. Step 4: Simplify right side
    335,998.20x = 143,770,168,998.54
  5. Step 5: Solve for x
    x = 143,770,168,998.54/335,998.20
  6. Step 6: Final answer
    x = 427,889.70

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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.