Finding the Fourth Proportional to 434,721.20, 652,081.80 and 135,220.70
Calculator
Solution
The fourth proportional to 434,721.20, 652,081.80 and 135,220.70 is: 202,831.05
Step by Step Solution
- Step 1: Write the proportion equation
434,721.20 : 652,081.80 = 135,220.70 : x - Step 2: Convert to fraction form
434,721.20/652,081.80 = 135,220.70/x - Step 3: Cross multiply
434,721.20x = 652,081.80 × 135,220.70 - Step 4: Simplify right side
434,721.20x = 88,174,957,453.26 - Step 5: Solve for x
x = 88,174,957,453.26/434,721.20 - Step 6: Final answer
x = 202,831.05
Related Problems
Find fourth proportional to 217,360.60, 326,040.90 and 67,610.35
Half scale
Find fourth proportional to 869,442.40, 1,304,163.60 and 270,441.40
Double scale
Find fourth proportional to 434,722.20, 652,083.30 and 135,221.70
Similar ratio
Find fourth proportional to 652,081.80, 978,122.70 and 202,831.05
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.