Finding the Fourth Proportional to 471,971.80, 707,957.70 and 139,547.80
Calculator
Solution
The fourth proportional to 471,971.80, 707,957.70 and 139,547.80 is: 209,321.70
Step by Step Solution
- Step 1: Write the proportion equation
471,971.80 : 707,957.70 = 139,547.80 : x - Step 2: Convert to fraction form
471,971.80/707,957.70 = 139,547.80/x - Step 3: Cross multiply
471,971.80x = 707,957.70 × 139,547.80 - Step 4: Simplify right side
471,971.80x = 98,793,939,528.06 - Step 5: Solve for x
x = 98,793,939,528.06/471,971.80 - Step 6: Final answer
x = 209,321.70
Related Problems
Find fourth proportional to 235,985.90, 353,978.85 and 69,773.90
Half scale
Find fourth proportional to 943,943.60, 1,415,915.40 and 279,095.60
Double scale
Find fourth proportional to 471,972.80, 707,959.20 and 139,548.80
Similar ratio
Find fourth proportional to 707,957.70, 1,061,936.55 and 209,321.70
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.