Finding the Fourth Proportional to 317,821.08, 438,616.62 and 196,986.12
Calculator
Solution
The fourth proportional to 317,821.08, 438,616.62 and 196,986.12 is: 271,855.43
Step by Step Solution
- Step 1: Write the proportion equation
317,821.08 : 438,616.62 = 196,986.12 : x - Step 2: Convert to fraction form
317,821.08/438,616.62 = 196,986.12/x - Step 3: Cross multiply
317,821.08x = 438,616.62 × 196,986.12 - Step 4: Simplify right side
317,821.08x = 86,401,386,141.31 - Step 5: Solve for x
x = 86,401,386,141.31/317,821.08 - Step 6: Final answer
x = 271,855.43
Related Problems
Find fourth proportional to 158,910.54, 219,308.31 and 98,493.06
Half scale
Find fourth proportional to 635,642.16, 877,233.24 and 393,972.24
Double scale
Find fourth proportional to 317,822.08, 438,618 and 196,987.12
Similar ratio
Find fourth proportional to 476,731.62, 657,924.93 and 295,479.18
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.