Finding the Fourth Proportional to 278,652.60, 418,008.02 and 91,678.84
Calculator
Solution
The fourth proportional to 278,652.60, 418,008.02 and 91,678.84 is: 137,527.84
Step by Step Solution
- Step 1: Write the proportion equation
278,652.60 : 418,008.02 = 91,678.84 : x - Step 2: Convert to fraction form
278,652.60/418,008.02 = 91,678.84/x - Step 3: Cross multiply
278,652.60x = 418,008.02 × 91,678.84 - Step 4: Simplify right side
278,652.60x = 38,322,490,384.30 - Step 5: Solve for x
x = 38,322,490,384.30/278,652.60 - Step 6: Final answer
x = 137,527.84
Related Problems
Find fourth proportional to 139,326.30, 209,004.01 and 45,839.42
Half scale
Find fourth proportional to 557,305.20, 836,016.04 and 183,357.68
Double scale
Find fourth proportional to 278,653.60, 418,009.52 and 91,679.84
Similar ratio
Find fourth proportional to 417,978.90, 627,012.03 and 137,518.26
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.