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Finding the Fourth Proportional to 339,940.72, 509,969.40 and 182,126.80

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Solution

The fourth proportional to 339,940.72, 509,969.40 and 182,126.80 is: 273,221.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,940.72 : 509,969.40 = 182,126.80 : x
  2. Step 2: Convert to fraction form
    339,940.72/509,969.40 = 182,126.80/x
  3. Step 3: Cross multiply
    339,940.72x = 509,969.40 × 182,126.80
  4. Step 4: Simplify right side
    339,940.72x = 92,879,094,919.92
  5. Step 5: Solve for x
    x = 92,879,094,919.92/339,940.72
  6. Step 6: Final answer
    x = 273,221.45

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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.