Finding the Fourth Proportional to 303,438.12, 418,902.09 and 221,674.62
Calculator
Solution
The fourth proportional to 303,438.12, 418,902.09 and 221,674.62 is: 306,026.02
Step by Step Solution
- Step 1: Write the proportion equation
303,438.12 : 418,902.09 = 221,674.62 : x - Step 2: Convert to fraction form
303,438.12/418,902.09 = 221,674.62/x - Step 3: Cross multiply
303,438.12x = 418,902.09 × 221,674.62 - Step 4: Simplify right side
303,438.12x = 92,859,961,617.96 - Step 5: Solve for x
x = 92,859,961,617.96/303,438.12 - Step 6: Final answer
x = 306,026.02
Related Problems
Find fourth proportional to 151,719.06, 209,451.05 and 110,837.31
Half scale
Find fourth proportional to 606,876.24, 837,804.18 and 443,349.24
Double scale
Find fourth proportional to 303,439.12, 418,903.47 and 221,675.62
Similar ratio
Find fourth proportional to 455,157.18, 628,353.14 and 332,511.93
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.