Finding the Fourth Proportional to 312,710, 469,065 and 137,606
Calculator
Solution
The fourth proportional to 312,710, 469,065 and 137,606 is: 206,409
Step by Step Solution
- Step 1: Write the proportion equation
312,710 : 469,065 = 137,606 : x - Step 2: Convert to fraction form
312,710/469,065 = 137,606/x - Step 3: Cross multiply
312,710x = 469,065 × 137,606 - Step 4: Simplify right side
312,710x = 64,546,158,390 - Step 5: Solve for x
x = 64,546,158,390/312,710 - Step 6: Final answer
x = 206,409
Related Problems
Find fourth proportional to 156,355, 234,532.50 and 68,803
Half scale
Find fourth proportional to 625,420, 938,130 and 275,212
Double scale
Find fourth proportional to 312,711, 469,066.50 and 137,607
Similar ratio
Find fourth proportional to 469,065, 703,597.50 and 206,409
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.