Finding the Fourth Proportional to 385,189.59, 531,556.92 and 213,120.09
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Solution
The fourth proportional to 385,189.59, 531,556.92 and 213,120.09 is: 294,103.12
Step by Step Solution
- Step 1: Write the proportion equation
385,189.59 : 531,556.92 = 213,120.09 : x - Step 2: Convert to fraction form
385,189.59/531,556.92 = 213,120.09/x - Step 3: Cross multiply
385,189.59x = 531,556.92 × 213,120.09 - Step 4: Simplify right side
385,189.59x = 113,285,458,630.52 - Step 5: Solve for x
x = 113,285,458,630.52/385,189.59 - Step 6: Final answer
x = 294,103.12
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.