Finding the Fourth Proportional to 253,021.16, 349,170.28 and 138,302.12
Calculator
Solution
The fourth proportional to 253,021.16, 349,170.28 and 138,302.12 is: 190,857.52
Step by Step Solution
- Step 1: Write the proportion equation
253,021.16 : 349,170.28 = 138,302.12 : x - Step 2: Convert to fraction form
253,021.16/349,170.28 = 138,302.12/x - Step 3: Cross multiply
253,021.16x = 349,170.28 × 138,302.12 - Step 4: Simplify right side
253,021.16x = 48,290,989,964.99 - Step 5: Solve for x
x = 48,290,989,964.99/253,021.16 - Step 6: Final answer
x = 190,857.52
Related Problems
Find fourth proportional to 126,510.58, 174,585.14 and 69,151.06
Half scale
Find fourth proportional to 506,042.32, 698,340.56 and 276,604.24
Double scale
Find fourth proportional to 253,022.16, 349,171.66 and 138,303.12
Similar ratio
Find fourth proportional to 379,531.74, 523,755.42 and 207,453.18
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.