Finding the Third Proportional to 239,487.75 and 399,129.19
Calculator
Solution
The third proportional to 239,487.75 and 399,129.19 is: 665,186.88
Step by Step Solution
- Step 1: Write the proportion equation
239,487.75 : 399,129.19 = 399,129.19 : x - Step 2: Convert to fraction form
239,487.75/399,129.19 = 399,129.19/x - Step 3: Cross multiply
239,487.75x = 399,129.19 × 399,129.19 - Step 4: Simplify right side
239,487.75x = 159,304,108,314.41 - Step 5: Solve for x
x = 159,304,108,314.41/239,487.75 - Step 6: Final answer
x = 665,186.88
Related Problems
Find third proportional to 119,743.88 and 199,564.59
Half scale
Find third proportional to 478,975.50 and 798,258.38
Double scale
Find third proportional to 239,490 and 399,133
Similar ratio
Find third proportional to 359,231.63 and 598,693.78
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.