Finding the Fourth Proportional to 381,759.76, 526,905.84 and 220,621.60
Calculator
Solution
The fourth proportional to 381,759.76, 526,905.84 and 220,621.60 is: 304,502.52
Step by Step Solution
- Step 1: Write the proportion equation
381,759.76 : 526,905.84 = 220,621.60 : x - Step 2: Convert to fraction form
381,759.76/526,905.84 = 220,621.60/x - Step 3: Cross multiply
381,759.76x = 526,905.84 × 220,621.60 - Step 4: Simplify right side
381,759.76x = 116,246,809,470.14 - Step 5: Solve for x
x = 116,246,809,470.14/381,759.76 - Step 6: Final answer
x = 304,502.52
Related Problems
Find fourth proportional to 190,879.88, 263,452.92 and 110,310.80
Half scale
Find fourth proportional to 763,519.52, 1,053,811.68 and 441,243.20
Double scale
Find fourth proportional to 381,760.76, 526,907.22 and 220,622.60
Similar ratio
Find fourth proportional to 572,639.64, 790,358.76 and 330,932.40
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.