Finding the Fourth Proportional to 331,539.70, 497,309.55 and 82,221.70
Calculator
Solution
The fourth proportional to 331,539.70, 497,309.55 and 82,221.70 is: 123,332.55
Step by Step Solution
- Step 1: Write the proportion equation
331,539.70 : 497,309.55 = 82,221.70 : x - Step 2: Convert to fraction form
331,539.70/497,309.55 = 82,221.70/x - Step 3: Cross multiply
331,539.70x = 497,309.55 × 82,221.70 - Step 4: Simplify right side
331,539.70x = 40,889,636,627.24 - Step 5: Solve for x
x = 40,889,636,627.24/331,539.70 - Step 6: Final answer
x = 123,332.55
Related Problems
Find fourth proportional to 165,769.85, 248,654.78 and 41,110.85
Half scale
Find fourth proportional to 663,079.40, 994,619.10 and 164,443.40
Double scale
Find fourth proportional to 331,540.70, 497,311.05 and 82,222.70
Similar ratio
Find fourth proportional to 497,309.55, 745,964.33 and 123,332.55
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.