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Finding the Fourth Proportional to 199,609.57, 299,570.78 and 139,245.41

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Solution

The fourth proportional to 199,609.57, 299,570.78 and 139,245.41 is: 208,977.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,609.57 : 299,570.78 = 139,245.41 : x
  2. Step 2: Convert to fraction form
    199,609.57/299,570.78 = 139,245.41/x
  3. Step 3: Cross multiply
    199,609.57x = 299,570.78 × 139,245.41
  4. Step 4: Simplify right side
    199,609.57x = 41,713,856,085.12
  5. Step 5: Solve for x
    x = 41,713,856,085.12/199,609.57
  6. Step 6: Final answer
    x = 208,977.24

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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.