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Finding the Fourth Proportional to 339,348.20, 509,168.10 and 173,136.20

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Solution

The fourth proportional to 339,348.20, 509,168.10 and 173,136.20 is: 259,778.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,348.20 : 509,168.10 = 173,136.20 : x
  2. Step 2: Convert to fraction form
    339,348.20/509,168.10 = 173,136.20/x
  3. Step 3: Cross multiply
    339,348.20x = 509,168.10 × 173,136.20
  4. Step 4: Simplify right side
    339,348.20x = 88,155,429,995.22
  5. Step 5: Solve for x
    x = 88,155,429,995.22/339,348.20
  6. Step 6: Final answer
    x = 259,778.69

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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.