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Finding the Fourth Proportional to 339,996.70, 509,995.05 and 204,694.30

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Solution

The fourth proportional to 339,996.70, 509,995.05 and 204,694.30 is: 307,041.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,996.70 : 509,995.05 = 204,694.30 : x
  2. Step 2: Convert to fraction form
    339,996.70/509,995.05 = 204,694.30/x
  3. Step 3: Cross multiply
    339,996.70x = 509,995.05 × 204,694.30
  4. Step 4: Simplify right side
    339,996.70x = 104,393,079,763.22
  5. Step 5: Solve for x
    x = 104,393,079,763.22/339,996.70
  6. Step 6: Final answer
    x = 307,041.45

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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.