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Finding the Fourth Proportional to 339,995.70, 509,993.55 and 204,693.30

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Solution

The fourth proportional to 339,995.70, 509,993.55 and 204,693.30 is: 307,039.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,995.70 : 509,993.55 = 204,693.30 : x
  2. Step 2: Convert to fraction form
    339,995.70/509,993.55 = 204,693.30/x
  3. Step 3: Cross multiply
    339,995.70x = 509,993.55 × 204,693.30
  4. Step 4: Simplify right side
    339,995.70x = 104,392,262,728.22
  5. Step 5: Solve for x
    x = 104,392,262,728.22/339,995.70
  6. Step 6: Final answer
    x = 307,039.95

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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.