Finding the Fourth Proportional to 249,923.21, 374,929.93 and 81,428.54
Calculator
Solution
The fourth proportional to 249,923.21, 374,929.93 and 81,428.54 is: 122,157.50
Step by Step Solution
- Step 1: Write the proportion equation
249,923.21 : 374,929.93 = 81,428.54 : x - Step 2: Convert to fraction form
249,923.21/374,929.93 = 81,428.54/x - Step 3: Cross multiply
249,923.21x = 374,929.93 × 81,428.54 - Step 4: Simplify right side
249,923.21x = 30,529,994,723.98 - Step 5: Solve for x
x = 30,529,994,723.98/249,923.21 - Step 6: Final answer
x = 122,157.50
Related Problems
Find fourth proportional to 124,961.61, 187,464.96 and 40,714.27
Half scale
Find fourth proportional to 499,846.43, 749,859.86 and 162,857.07
Double scale
Find fourth proportional to 249,924.21, 374,931.43 and 81,429.54
Similar ratio
Find fourth proportional to 374,884.82, 562,394.89 and 122,142.80
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.