Finding the Fourth Proportional to 315,506.88, 435,860.10 and 272,991.60
Calculator
Solution
The fourth proportional to 315,506.88, 435,860.10 and 272,991.60 is: 377,126.95
Step by Step Solution
- Step 1: Write the proportion equation
315,506.88 : 435,860.10 = 272,991.60 : x - Step 2: Convert to fraction form
315,506.88/435,860.10 = 272,991.60/x - Step 3: Cross multiply
315,506.88x = 435,860.10 × 272,991.60 - Step 4: Simplify right side
315,506.88x = 118,986,146,075.16 - Step 5: Solve for x
x = 118,986,146,075.16/315,506.88 - Step 6: Final answer
x = 377,126.95
Related Problems
Find fourth proportional to 157,753.44, 217,930.05 and 136,495.80
Half scale
Find fourth proportional to 631,013.76, 871,720.20 and 545,983.20
Double scale
Find fourth proportional to 315,507.88, 435,861.48 and 272,992.60
Similar ratio
Find fourth proportional to 473,260.32, 653,790.15 and 409,487.40
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.