Finding the Fourth Proportional to 206,129.80, 309,194.70 and 164,657.80
Calculator
Solution
The fourth proportional to 206,129.80, 309,194.70 and 164,657.80 is: 246,986.70
Step by Step Solution
- Step 1: Write the proportion equation
206,129.80 : 309,194.70 = 164,657.80 : x - Step 2: Convert to fraction form
206,129.80/309,194.70 = 164,657.80/x - Step 3: Cross multiply
206,129.80x = 309,194.70 × 164,657.80 - Step 4: Simplify right side
206,129.80x = 50,911,319,073.66 - Step 5: Solve for x
x = 50,911,319,073.66/206,129.80 - Step 6: Final answer
x = 246,986.70
Related Problems
Find fourth proportional to 103,064.90, 154,597.35 and 82,328.90
Half scale
Find fourth proportional to 412,259.60, 618,389.40 and 329,315.60
Double scale
Find fourth proportional to 206,130.80, 309,196.20 and 164,658.80
Similar ratio
Find fourth proportional to 309,194.70, 463,792.05 and 246,986.70
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.