Finding the Third Proportional to 128,470.50 and 197,619.75
Calculator
Solution
The third proportional to 128,470.50 and 197,619.75 is: 303,988.59
Step by Step Solution
- Step 1: Write the proportion equation
128,470.50 : 197,619.75 = 197,619.75 : x - Step 2: Convert to fraction form
128,470.50/197,619.75 = 197,619.75/x - Step 3: Cross multiply
128,470.50x = 197,619.75 × 197,619.75 - Step 4: Simplify right side
128,470.50x = 39,053,565,590.06 - Step 5: Solve for x
x = 39,053,565,590.06/128,470.50 - Step 6: Final answer
x = 303,988.59
Related Problems
Find third proportional to 64,235.25 and 98,809.88
Half scale
Find third proportional to 256,941 and 395,239.50
Double scale
Find third proportional to 128,473 and 197,623
Similar ratio
Find third proportional to 192,705.75 and 296,429.63
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.