Finding the Fourth Proportional to 231,205.97, 346,815.11 and 81,412.19
Calculator
Solution
The fourth proportional to 231,205.97, 346,815.11 and 81,412.19 is: 122,120.45
Step by Step Solution
- Step 1: Write the proportion equation
231,205.97 : 346,815.11 = 81,412.19 : x - Step 2: Convert to fraction form
231,205.97/346,815.11 = 81,412.19/x - Step 3: Cross multiply
231,205.97x = 346,815.11 × 81,412.19 - Step 4: Simplify right side
231,205.97x = 28,234,977,630.19 - Step 5: Solve for x
x = 28,234,977,630.19/231,205.97 - Step 6: Final answer
x = 122,120.45
Related Problems
Find fourth proportional to 115,602.99, 173,407.56 and 40,706.10
Half scale
Find fourth proportional to 462,411.94, 693,630.22 and 162,824.38
Double scale
Find fourth proportional to 231,206.97, 346,816.61 and 81,413.19
Similar ratio
Find fourth proportional to 346,808.96, 520,222.67 and 122,118.29
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.