Finding the Fourth Proportional to 229,722.75, 317,017.53 and 129,120.75
Calculator
Solution
The fourth proportional to 229,722.75, 317,017.53 and 129,120.75 is: 178,186.71
Step by Step Solution
- Step 1: Write the proportion equation
229,722.75 : 317,017.53 = 129,120.75 : x - Step 2: Convert to fraction form
229,722.75/317,017.53 = 129,120.75/x - Step 3: Cross multiply
229,722.75x = 317,017.53 × 129,120.75 - Step 4: Simplify right side
229,722.75x = 40,933,541,236.75 - Step 5: Solve for x
x = 40,933,541,236.75/229,722.75 - Step 6: Final answer
x = 178,186.71
Related Problems
Find fourth proportional to 114,861.38, 158,508.77 and 64,560.38
Half scale
Find fourth proportional to 459,445.50, 634,035.06 and 258,241.50
Double scale
Find fourth proportional to 229,723.75, 317,018.91 and 129,121.75
Similar ratio
Find fourth proportional to 344,584.13, 475,526.30 and 193,681.13
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.