Finding the Fourth Proportional to 270,283.78, 372,989.10 and 149,428.09
Calculator
Solution
The fourth proportional to 270,283.78, 372,989.10 and 149,428.09 is: 206,209.37
Step by Step Solution
- Step 1: Write the proportion equation
270,283.78 : 372,989.10 = 149,428.09 : x - Step 2: Convert to fraction form
270,283.78/372,989.10 = 149,428.09/x - Step 3: Cross multiply
270,283.78x = 372,989.10 × 149,428.09 - Step 4: Simplify right side
270,283.78x = 55,735,048,803.82 - Step 5: Solve for x
x = 55,735,048,803.82/270,283.78 - Step 6: Final answer
x = 206,209.37
Related Problems
Find fourth proportional to 135,141.89, 186,494.55 and 74,714.05
Half scale
Find fourth proportional to 540,567.56, 745,978.20 and 298,856.18
Double scale
Find fourth proportional to 270,284.78, 372,990.48 and 149,429.09
Similar ratio
Find fourth proportional to 405,425.67, 559,483.65 and 224,142.14
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.