Finding the Fourth Proportional to 303,764.10, 455,646.15 and 209,285.70
Calculator
Solution
The fourth proportional to 303,764.10, 455,646.15 and 209,285.70 is: 313,928.55
Step by Step Solution
- Step 1: Write the proportion equation
303,764.10 : 455,646.15 = 209,285.70 : x - Step 2: Convert to fraction form
303,764.10/455,646.15 = 209,285.70/x - Step 3: Cross multiply
303,764.10x = 455,646.15 × 209,285.70 - Step 4: Simplify right side
303,764.10x = 95,360,223,455.06 - Step 5: Solve for x
x = 95,360,223,455.06/303,764.10 - Step 6: Final answer
x = 313,928.55
Related Problems
Find fourth proportional to 151,882.05, 227,823.08 and 104,642.85
Half scale
Find fourth proportional to 607,528.20, 911,292.30 and 418,571.40
Double scale
Find fourth proportional to 303,765.10, 455,647.65 and 209,286.70
Similar ratio
Find fourth proportional to 455,646.15, 683,469.23 and 313,928.55
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.