Finding the Fourth Proportional to 436,905.36, 655,138.80 and 212,124.96
Calculator
Solution
The fourth proportional to 436,905.36, 655,138.80 and 212,124.96 is: 318,081.00
Step by Step Solution
- Step 1: Write the proportion equation
436,905.36 : 655,138.80 = 212,124.96 : x - Step 2: Convert to fraction form
436,905.36/655,138.80 = 212,124.96/x - Step 3: Cross multiply
436,905.36x = 655,138.80 × 212,124.96 - Step 4: Simplify right side
436,905.36x = 138,971,291,744.45 - Step 5: Solve for x
x = 138,971,291,744.45/436,905.36 - Step 6: Final answer
x = 318,081.00
Related Problems
Find fourth proportional to 218,452.68, 327,569.40 and 106,062.48
Half scale
Find fourth proportional to 873,810.72, 1,310,277.60 and 424,249.92
Double scale
Find fourth proportional to 436,906.36, 655,140.30 and 212,125.96
Similar ratio
Find fourth proportional to 655,358.04, 982,708.20 and 318,187.44
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.