Finding the Third Proportional to 199,556 and 421,589
Calculator
Solution
The third proportional to 199,556 and 421,589 is: 890,663.70
Step by Step Solution
- Step 1: Write the proportion equation
199,556 : 421,589 = 421,589 : x - Step 2: Convert to fraction form
199,556/421,589 = 421,589/x - Step 3: Cross multiply
199,556x = 421,589 × 421,589 - Step 4: Simplify right side
199,556x = 177,737,284,921 - Step 5: Solve for x
x = 177,737,284,921/199,556 - Step 6: Final answer
x = 890,663.70
Related Problems
Find third proportional to 99,778 and 210,794.50
Half scale
Find third proportional to 399,112 and 843,178
Double scale
Find third proportional to 199,558 and 421,593
Similar ratio
Find third proportional to 299,334 and 632,383.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.