Finding the Fourth Proportional to 212,911.80, 319,367.70 and 195,708.60
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Solution
The fourth proportional to 212,911.80, 319,367.70 and 195,708.60 is: 293,562.90
Step by Step Solution
- Step 1: Write the proportion equation
212,911.80 : 319,367.70 = 195,708.60 : x - Step 2: Convert to fraction form
212,911.80/319,367.70 = 195,708.60/x - Step 3: Cross multiply
212,911.80x = 319,367.70 × 195,708.60 - Step 4: Simplify right side
212,911.80x = 62,503,005,452.22 - Step 5: Solve for x
x = 62,503,005,452.22/212,911.80 - Step 6: Final answer
x = 293,562.90
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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.