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Finding the Fourth Proportional to 339,573.26, 509,359.34 and 90,255.26

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Solution

The fourth proportional to 339,573.26, 509,359.34 and 90,255.26 is: 135,382.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,573.26 : 509,359.34 = 90,255.26 : x
  2. Step 2: Convert to fraction form
    339,573.26/509,359.34 = 90,255.26/x
  3. Step 3: Cross multiply
    339,573.26x = 509,359.34 × 90,255.26
  4. Step 4: Simplify right side
    339,573.26x = 45,972,359,665.13
  5. Step 5: Solve for x
    x = 45,972,359,665.13/339,573.26
  6. Step 6: Final answer
    x = 135,382.74

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Similar ratio
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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.