Finding the Fourth Proportional to 288,975.06, 399,166.80 and 221,821.80
Calculator
Solution
The fourth proportional to 288,975.06, 399,166.80 and 221,821.80 is: 306,406.71
Step by Step Solution
- Step 1: Write the proportion equation
288,975.06 : 399,166.80 = 221,821.80 : x - Step 2: Convert to fraction form
288,975.06/399,166.80 = 221,821.80/x - Step 3: Cross multiply
288,975.06x = 399,166.80 × 221,821.80 - Step 4: Simplify right side
288,975.06x = 88,543,898,076.24 - Step 5: Solve for x
x = 88,543,898,076.24/288,975.06 - Step 6: Final answer
x = 306,406.71
Related Problems
Find fourth proportional to 144,487.53, 199,583.40 and 110,910.90
Half scale
Find fourth proportional to 577,950.12, 798,333.60 and 443,643.60
Double scale
Find fourth proportional to 288,976.06, 399,168.18 and 221,822.80
Similar ratio
Find fourth proportional to 433,462.59, 598,750.20 and 332,732.70
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.