Finding the Fourth Proportional to 343,355.97, 515,098.57 and 138,206.31
Calculator
Solution
The fourth proportional to 343,355.97, 515,098.57 and 138,206.31 is: 207,335.47
Step by Step Solution
- Step 1: Write the proportion equation
343,355.97 : 515,098.57 = 138,206.31 : x - Step 2: Convert to fraction form
343,355.97/515,098.57 = 138,206.31/x - Step 3: Cross multiply
343,355.97x = 515,098.57 × 138,206.31 - Step 4: Simplify right side
343,355.97x = 71,189,872,645.98 - Step 5: Solve for x
x = 71,189,872,645.98/343,355.97 - Step 6: Final answer
x = 207,335.47
Related Problems
Find fourth proportional to 171,677.99, 257,549.29 and 69,103.16
Half scale
Find fourth proportional to 686,711.94, 1,030,197.14 and 276,412.62
Double scale
Find fourth proportional to 343,356.97, 515,100.07 and 138,207.31
Similar ratio
Find fourth proportional to 515,033.96, 772,647.86 and 207,309.47
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.