Finding the Fourth Proportional to 211,821.75, 292,339.94 and 122,397.75
Calculator
Solution
The fourth proportional to 211,821.75, 292,339.94 and 122,397.75 is: 168,923.87
Step by Step Solution
- Step 1: Write the proportion equation
211,821.75 : 292,339.94 = 122,397.75 : x - Step 2: Convert to fraction form
211,821.75/292,339.94 = 122,397.75/x - Step 3: Cross multiply
211,821.75x = 292,339.94 × 122,397.75 - Step 4: Simplify right side
211,821.75x = 35,781,750,279.15 - Step 5: Solve for x
x = 35,781,750,279.15/211,821.75 - Step 6: Final answer
x = 168,923.87
Related Problems
Find fourth proportional to 105,910.88, 146,169.97 and 61,198.88
Half scale
Find fourth proportional to 423,643.50, 584,679.87 and 244,795.50
Double scale
Find fourth proportional to 211,822.75, 292,341.32 and 122,398.75
Similar ratio
Find fourth proportional to 317,732.63, 438,509.90 and 183,596.63
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.