Finding the Fourth Proportional to 250,507.69, 345,691.35 and 135,783.87
Calculator
Solution
The fourth proportional to 250,507.69, 345,691.35 and 135,783.87 is: 187,376.72
Step by Step Solution
- Step 1: Write the proportion equation
250,507.69 : 345,691.35 = 135,783.87 : x - Step 2: Convert to fraction form
250,507.69/345,691.35 = 135,783.87/x - Step 3: Cross multiply
250,507.69x = 345,691.35 × 135,783.87 - Step 4: Simplify right side
250,507.69x = 46,939,308,413.10 - Step 5: Solve for x
x = 46,939,308,413.10/250,507.69 - Step 6: Final answer
x = 187,376.72
Related Problems
Find fourth proportional to 125,253.84, 172,845.67 and 67,891.93
Half scale
Find fourth proportional to 501,015.38, 691,382.70 and 271,567.74
Double scale
Find fourth proportional to 250,508.69, 345,692.73 and 135,784.87
Similar ratio
Find fourth proportional to 375,761.53, 518,537.02 and 203,675.80
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.