Finding the Fourth Proportional to 158,539.28, 218,658.99 and 140,409.05
Calculator
Solution
The fourth proportional to 158,539.28, 218,658.99 and 140,409.05 is: 193,653.59
Step by Step Solution
- Step 1: Write the proportion equation
158,539.28 : 218,658.99 = 140,409.05 : x - Step 2: Convert to fraction form
158,539.28/218,658.99 = 140,409.05/x - Step 3: Cross multiply
158,539.28x = 218,658.99 × 140,409.05 - Step 4: Simplify right side
158,539.28x = 30,701,700,493.10 - Step 5: Solve for x
x = 30,701,700,493.10/158,539.28 - Step 6: Final answer
x = 193,653.59
Related Problems
Find fourth proportional to 79,269.64, 109,329.50 and 70,204.52
Half scale
Find fourth proportional to 317,078.55, 437,317.99 and 280,818.09
Double scale
Find fourth proportional to 158,540.28, 218,660.37 and 140,410.05
Similar ratio
Find fourth proportional to 237,808.91, 327,988.49 and 210,613.57
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.