Finding the Fourth Proportional to 330,938.40, 496,437.16 and 128,529.67
Calculator
Solution
The fourth proportional to 330,938.40, 496,437.16 and 128,529.67 is: 192,805.99
Step by Step Solution
- Step 1: Write the proportion equation
330,938.40 : 496,437.16 = 128,529.67 : x - Step 2: Convert to fraction form
330,938.40/496,437.16 = 128,529.67/x - Step 3: Cross multiply
330,938.40x = 496,437.16 × 128,529.67 - Step 4: Simplify right side
330,938.40x = 63,806,904,350.54 - Step 5: Solve for x
x = 63,806,904,350.54/330,938.40 - Step 6: Final answer
x = 192,805.99
Related Problems
Find fourth proportional to 165,469.20, 248,218.58 and 64,264.84
Half scale
Find fourth proportional to 661,876.80, 992,874.32 and 257,059.34
Double scale
Find fourth proportional to 330,939.40, 496,438.66 and 128,530.67
Similar ratio
Find fourth proportional to 496,407.60, 744,655.74 and 192,794.51
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.