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Finding the Fourth Proportional to 339,743.70, 509,615.55 and 171,782.10

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Solution

The fourth proportional to 339,743.70, 509,615.55 and 171,782.10 is: 257,673.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,743.70 : 509,615.55 = 171,782.10 : x
  2. Step 2: Convert to fraction form
    339,743.70/509,615.55 = 171,782.10/x
  3. Step 3: Cross multiply
    339,743.70x = 509,615.55 × 171,782.10
  4. Step 4: Simplify right side
    339,743.70x = 87,542,829,371.66
  5. Step 5: Solve for x
    x = 87,542,829,371.66/339,743.70
  6. Step 6: Final answer
    x = 257,673.15

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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.