Finding the Fourth Proportional to 236,820.35, 326,816.79 and 129,397.05
Calculator
Solution
The fourth proportional to 236,820.35, 326,816.79 and 129,397.05 is: 178,570.50
Step by Step Solution
- Step 1: Write the proportion equation
236,820.35 : 326,816.79 = 129,397.05 : x - Step 2: Convert to fraction form
236,820.35/326,816.79 = 129,397.05/x - Step 3: Cross multiply
236,820.35x = 326,816.79 × 129,397.05 - Step 4: Simplify right side
236,820.35x = 42,289,128,516.47 - Step 5: Solve for x
x = 42,289,128,516.47/236,820.35 - Step 6: Final answer
x = 178,570.50
Related Problems
Find fourth proportional to 118,410.18, 163,408.40 and 64,698.53
Half scale
Find fourth proportional to 473,640.70, 653,633.58 and 258,794.10
Double scale
Find fourth proportional to 236,821.35, 326,818.17 and 129,398.05
Similar ratio
Find fourth proportional to 355,230.53, 490,225.19 and 194,095.58
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.