Finding the Fourth Proportional to 321,577.34, 443,979.99 and 206,909.28
Calculator
Solution
The fourth proportional to 321,577.34, 443,979.99 and 206,909.28 is: 285,665.59
Step by Step Solution
- Step 1: Write the proportion equation
321,577.34 : 443,979.99 = 206,909.28 : x - Step 2: Convert to fraction form
321,577.34/443,979.99 = 206,909.28/x - Step 3: Cross multiply
321,577.34x = 443,979.99 × 206,909.28 - Step 4: Simplify right side
321,577.34x = 91,863,580,065.31 - Step 5: Solve for x
x = 91,863,580,065.31/321,577.34 - Step 6: Final answer
x = 285,665.59
Related Problems
Find fourth proportional to 160,788.67, 221,990.00 and 103,454.64
Half scale
Find fourth proportional to 643,154.67, 887,959.98 and 413,818.56
Double scale
Find fourth proportional to 321,578.34, 443,981.37 and 206,910.28
Similar ratio
Find fourth proportional to 482,366.00, 665,969.99 and 310,363.92
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.