Finding the Fourth Proportional to 228,428.28, 342,720.25 and 68,508.09
Calculator
Solution
The fourth proportional to 228,428.28, 342,720.25 and 68,508.09 is: 102,785.48
Step by Step Solution
- Step 1: Write the proportion equation
228,428.28 : 342,720.25 = 68,508.09 : x - Step 2: Convert to fraction form
228,428.28/342,720.25 = 68,508.09/x - Step 3: Cross multiply
228,428.28x = 342,720.25 × 68,508.09 - Step 4: Simplify right side
228,428.28x = 23,479,109,731.82 - Step 5: Solve for x
x = 23,479,109,731.82/228,428.28 - Step 6: Final answer
x = 102,785.48
Related Problems
Find fourth proportional to 114,214.14, 171,360.13 and 34,254.05
Half scale
Find fourth proportional to 456,856.56, 685,440.50 and 137,016.18
Double scale
Find fourth proportional to 228,429.28, 342,721.75 and 68,509.09
Similar ratio
Find fourth proportional to 342,642.42, 514,080.38 and 102,762.14
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.