Finding the Fourth Proportional to 303,911.20, 455,866.80 and 135,431.20
Calculator
Solution
The fourth proportional to 303,911.20, 455,866.80 and 135,431.20 is: 203,146.80
Step by Step Solution
- Step 1: Write the proportion equation
303,911.20 : 455,866.80 = 135,431.20 : x - Step 2: Convert to fraction form
303,911.20/455,866.80 = 135,431.20/x - Step 3: Cross multiply
303,911.20x = 455,866.80 × 135,431.20 - Step 4: Simplify right side
303,911.20x = 61,738,587,764.16 - Step 5: Solve for x
x = 61,738,587,764.16/303,911.20 - Step 6: Final answer
x = 203,146.80
Related Problems
Find fourth proportional to 151,955.60, 227,933.40 and 67,715.60
Half scale
Find fourth proportional to 607,822.40, 911,733.60 and 270,862.40
Double scale
Find fourth proportional to 303,912.20, 455,868.30 and 135,432.20
Similar ratio
Find fourth proportional to 455,866.80, 683,800.20 and 203,146.80
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.