Finding the Fourth Proportional to 211,388.78, 291,716.11 and 115,901.66
Calculator
Solution
The fourth proportional to 211,388.78, 291,716.11 and 115,901.66 is: 159,944.07
Step by Step Solution
- Step 1: Write the proportion equation
211,388.78 : 291,716.11 = 115,901.66 : x - Step 2: Convert to fraction form
211,388.78/291,716.11 = 115,901.66/x - Step 3: Cross multiply
211,388.78x = 291,716.11 × 115,901.66 - Step 4: Simplify right side
211,388.78x = 33,810,381,397.74 - Step 5: Solve for x
x = 33,810,381,397.74/211,388.78 - Step 6: Final answer
x = 159,944.07
Related Problems
Find fourth proportional to 105,694.39, 145,858.06 and 57,950.83
Half scale
Find fourth proportional to 422,777.56, 583,432.22 and 231,803.32
Double scale
Find fourth proportional to 211,389.78, 291,717.49 and 115,902.66
Similar ratio
Find fourth proportional to 317,083.17, 437,574.17 and 173,852.49
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.