Finding the Fourth Proportional to 171,207.80, 256,811.70 and 115,220.60
Calculator
Solution
The fourth proportional to 171,207.80, 256,811.70 and 115,220.60 is: 172,830.90
Step by Step Solution
- Step 1: Write the proportion equation
171,207.80 : 256,811.70 = 115,220.60 : x - Step 2: Convert to fraction form
171,207.80/256,811.70 = 115,220.60/x - Step 3: Cross multiply
171,207.80x = 256,811.70 × 115,220.60 - Step 4: Simplify right side
171,207.80x = 29,589,998,161.02 - Step 5: Solve for x
x = 29,589,998,161.02/171,207.80 - Step 6: Final answer
x = 172,830.90
Related Problems
Find fourth proportional to 85,603.90, 128,405.85 and 57,610.30
Half scale
Find fourth proportional to 342,415.60, 513,623.40 and 230,441.20
Double scale
Find fourth proportional to 171,208.80, 256,813.20 and 115,221.60
Similar ratio
Find fourth proportional to 256,811.70, 385,217.55 and 172,830.90
1.5x scale
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.