Finding the Fourth Proportional to 213,064.17, 319,718.36 and 86,681.08
Calculator
Solution
The fourth proportional to 213,064.17, 319,718.36 and 86,681.08 is: 130,071.30
Step by Step Solution
- Step 1: Write the proportion equation
213,064.17 : 319,718.36 = 86,681.08 : x - Step 2: Convert to fraction form
213,064.17/319,718.36 = 86,681.08/x - Step 3: Cross multiply
213,064.17x = 319,718.36 × 86,681.08 - Step 4: Simplify right side
213,064.17x = 27,713,532,740.63 - Step 5: Solve for x
x = 27,713,532,740.63/213,064.17 - Step 6: Final answer
x = 130,071.30
Related Problems
Find fourth proportional to 106,532.09, 159,859.18 and 43,340.54
Half scale
Find fourth proportional to 426,128.34, 639,436.72 and 173,362.16
Double scale
Find fourth proportional to 213,065.17, 319,719.86 and 86,682.08
Similar ratio
Find fourth proportional to 319,596.26, 479,577.54 and 130,021.62
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.