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Finding the Fourth Proportional to 339,997.20, 509,995.80 and 162,850.20

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Solution

The fourth proportional to 339,997.20, 509,995.80 and 162,850.20 is: 244,275.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,997.20 : 509,995.80 = 162,850.20 : x
  2. Step 2: Convert to fraction form
    339,997.20/509,995.80 = 162,850.20/x
  3. Step 3: Cross multiply
    339,997.20x = 509,995.80 × 162,850.20
  4. Step 4: Simplify right side
    339,997.20x = 83,052,918,029.16
  5. Step 5: Solve for x
    x = 83,052,918,029.16/339,997.20
  6. Step 6: Final answer
    x = 244,275.30

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Double scale
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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.