Finding the Fourth Proportional to 205,198.68, 307,724.34 and 86,878.44
Calculator
Solution
The fourth proportional to 205,198.68, 307,724.34 and 86,878.44 is: 130,286.46
Step by Step Solution
- Step 1: Write the proportion equation
205,198.68 : 307,724.34 = 86,878.44 : x - Step 2: Convert to fraction form
205,198.68/307,724.34 = 86,878.44/x - Step 3: Cross multiply
205,198.68x = 307,724.34 × 86,878.44 - Step 4: Simplify right side
205,198.68x = 26,734,610,609.23 - Step 5: Solve for x
x = 26,734,610,609.23/205,198.68 - Step 6: Final answer
x = 130,286.46
Related Problems
Find fourth proportional to 102,599.34, 153,862.17 and 43,439.22
Half scale
Find fourth proportional to 410,397.36, 615,448.68 and 173,756.88
Double scale
Find fourth proportional to 205,199.68, 307,725.84 and 86,879.44
Similar ratio
Find fourth proportional to 307,798.02, 461,586.51 and 130,317.66
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.