Finding the Fourth Proportional to 212,909.27, 318,725.84 and 205,338.80
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Solution
The fourth proportional to 212,909.27, 318,725.84 and 205,338.80 is: 307,392.84
Step by Step Solution
- Step 1: Write the proportion equation
212,909.27 : 318,725.84 = 205,338.80 : x - Step 2: Convert to fraction form
212,909.27/318,725.84 = 205,338.80/x - Step 3: Cross multiply
212,909.27x = 318,725.84 × 205,338.80 - Step 4: Simplify right side
212,909.27x = 65,446,782,824.75 - Step 5: Solve for x
x = 65,446,782,824.75/212,909.27 - Step 6: Final answer
x = 307,392.84
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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.