Finding the Fourth Proportional to 405,072.18, 558,991.80 and 223,786.08
Calculator
Solution
The fourth proportional to 405,072.18, 558,991.80 and 223,786.08 is: 308,820.48
Step by Step Solution
- Step 1: Write the proportion equation
405,072.18 : 558,991.80 = 223,786.08 : x - Step 2: Convert to fraction form
405,072.18/558,991.80 = 223,786.08/x - Step 3: Cross multiply
405,072.18x = 558,991.80 × 223,786.08 - Step 4: Simplify right side
405,072.18x = 125,094,583,674.14 - Step 5: Solve for x
x = 125,094,583,674.14/405,072.18 - Step 6: Final answer
x = 308,820.48
Related Problems
Find fourth proportional to 202,536.09, 279,495.90 and 111,893.04
Half scale
Find fourth proportional to 810,144.36, 1,117,983.60 and 447,572.16
Double scale
Find fourth proportional to 405,073.18, 558,993.18 and 223,787.08
Similar ratio
Find fourth proportional to 607,608.27, 838,487.70 and 335,679.12
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.