Finding the Third Proportional to 128,539.41 and 281,993.91
Calculator
Solution
The third proportional to 128,539.41 and 281,993.91 is: 618,647.35
Step by Step Solution
- Step 1: Write the proportion equation
128,539.41 : 281,993.91 = 281,993.91 : x - Step 2: Convert to fraction form
128,539.41/281,993.91 = 281,993.91/x - Step 3: Cross multiply
128,539.41x = 281,993.91 × 281,993.91 - Step 4: Simplify right side
128,539.41x = 79,520,563,162.13 - Step 5: Solve for x
x = 79,520,563,162.13/128,539.41 - Step 6: Final answer
x = 618,647.35
Related Problems
Find third proportional to 64,269.70 and 140,996.95
Half scale
Find third proportional to 257,078.81 and 563,987.81
Double scale
Find third proportional to 128,541 and 281,998
Similar ratio
Find third proportional to 192,809.11 and 422,990.86
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.