Finding the Fourth Proportional to 254,557.20, 381,918.74 and 121,420.12
Calculator
Solution
The fourth proportional to 254,557.20, 381,918.74 and 121,420.12 is: 182,169.74
Step by Step Solution
- Step 1: Write the proportion equation
254,557.20 : 381,918.74 = 121,420.12 : x - Step 2: Convert to fraction form
254,557.20/381,918.74 = 121,420.12/x - Step 3: Cross multiply
254,557.20x = 381,918.74 × 121,420.12 - Step 4: Simplify right side
254,557.20x = 46,372,619,241.05 - Step 5: Solve for x
x = 46,372,619,241.05/254,557.20 - Step 6: Final answer
x = 182,169.74
Related Problems
Find fourth proportional to 127,278.60, 190,959.37 and 60,710.06
Half scale
Find fourth proportional to 509,114.40, 763,837.48 and 242,840.24
Double scale
Find fourth proportional to 254,558.20, 381,920.24 and 121,421.12
Similar ratio
Find fourth proportional to 381,835.80, 572,878.11 and 182,130.18
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.