Finding the Fourth Proportional to 245,473.63, 338,755.65 and 138,042.70
Calculator
Solution
The fourth proportional to 245,473.63, 338,755.65 and 138,042.70 is: 190,500.07
Step by Step Solution
- Step 1: Write the proportion equation
245,473.63 : 338,755.65 = 138,042.70 : x - Step 2: Convert to fraction form
245,473.63/338,755.65 = 138,042.70/x - Step 3: Cross multiply
245,473.63x = 338,755.65 × 138,042.70 - Step 4: Simplify right side
245,473.63x = 46,762,744,566.26 - Step 5: Solve for x
x = 46,762,744,566.26/245,473.63 - Step 6: Final answer
x = 190,500.07
Related Problems
Find fourth proportional to 122,736.82, 169,377.83 and 69,021.35
Half scale
Find fourth proportional to 490,947.26, 677,511.30 and 276,085.40
Double scale
Find fourth proportional to 245,474.63, 338,757.03 and 138,043.70
Similar ratio
Find fourth proportional to 368,210.45, 508,133.48 and 207,064.05
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.