Finding the Fourth Proportional to 302,603.80, 453,905.70 and 80,987.80
Calculator
Solution
The fourth proportional to 302,603.80, 453,905.70 and 80,987.80 is: 121,481.70
Step by Step Solution
- Step 1: Write the proportion equation
302,603.80 : 453,905.70 = 80,987.80 : x - Step 2: Convert to fraction form
302,603.80/453,905.70 = 80,987.80/x - Step 3: Cross multiply
302,603.80x = 453,905.70 × 80,987.80 - Step 4: Simplify right side
302,603.80x = 36,760,824,050.46 - Step 5: Solve for x
x = 36,760,824,050.46/302,603.80 - Step 6: Final answer
x = 121,481.70
Related Problems
Find fourth proportional to 151,301.90, 226,952.85 and 40,493.90
Half scale
Find fourth proportional to 605,207.60, 907,811.40 and 161,975.60
Double scale
Find fourth proportional to 302,604.80, 453,907.20 and 80,988.80
Similar ratio
Find fourth proportional to 453,905.70, 680,858.55 and 121,481.70
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.