Finding the Fourth Proportional to 388,975.08, 536,778.18 and 219,205.80
Calculator
Solution
The fourth proportional to 388,975.08, 536,778.18 and 219,205.80 is: 302,499.82
Step by Step Solution
- Step 1: Write the proportion equation
388,975.08 : 536,778.18 = 219,205.80 : x - Step 2: Convert to fraction form
388,975.08/536,778.18 = 219,205.80/x - Step 3: Cross multiply
388,975.08x = 536,778.18 × 219,205.80 - Step 4: Simplify right side
388,975.08x = 117,664,890,369.44 - Step 5: Solve for x
x = 117,664,890,369.44/388,975.08 - Step 6: Final answer
x = 302,499.82
Related Problems
Find fourth proportional to 194,487.54, 268,389.09 and 109,602.90
Half scale
Find fourth proportional to 777,950.16, 1,073,556.36 and 438,411.60
Double scale
Find fourth proportional to 388,976.08, 536,779.56 and 219,206.80
Similar ratio
Find fourth proportional to 583,462.62, 805,167.27 and 328,808.70
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.