Finding the Fourth Proportional to 272,297.21, 408,391.84 and 258,794.81
Calculator
Solution
The fourth proportional to 272,297.21, 408,391.84 and 258,794.81 is: 388,140.92
Step by Step Solution
- Step 1: Write the proportion equation
272,297.21 : 408,391.84 = 258,794.81 : x - Step 2: Convert to fraction form
272,297.21/408,391.84 = 258,794.81/x - Step 3: Cross multiply
272,297.21x = 408,391.84 × 258,794.81 - Step 4: Simplify right side
272,297.21x = 105,689,688,451.35 - Step 5: Solve for x
x = 105,689,688,451.35/272,297.21 - Step 6: Final answer
x = 388,140.92
Related Problems
Find fourth proportional to 136,148.60, 204,195.92 and 129,397.40
Half scale
Find fourth proportional to 544,594.41, 816,783.68 and 517,589.62
Double scale
Find fourth proportional to 272,298.21, 408,393.34 and 258,795.81
Similar ratio
Find fourth proportional to 408,445.81, 612,587.76 and 388,192.21
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.