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Finding the Fourth Proportional to 339,589.98, 509,618.97 and 139,910.67

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Solution

The fourth proportional to 339,589.98, 509,618.97 and 139,910.67 is: 209,962.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,589.98 : 509,618.97 = 139,910.67 : x
  2. Step 2: Convert to fraction form
    339,589.98/509,618.97 = 139,910.67/x
  3. Step 3: Cross multiply
    339,589.98x = 509,618.97 × 139,910.67
  4. Step 4: Simplify right side
    339,589.98x = 71,301,131,537.41
  5. Step 5: Solve for x
    x = 71,301,131,537.41/339,589.98
  6. Step 6: Final answer
    x = 209,962.41

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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.