Finding the Fourth Proportional to 298,507.28, 411,239.43 and 207,707.09
Calculator
Solution
The fourth proportional to 298,507.28, 411,239.43 and 207,707.09 is: 286,148.28
Step by Step Solution
- Step 1: Write the proportion equation
298,507.28 : 411,239.43 = 207,707.09 : x - Step 2: Convert to fraction form
298,507.28/411,239.43 = 207,707.09/x - Step 3: Cross multiply
298,507.28x = 411,239.43 × 207,707.09 - Step 4: Simplify right side
298,507.28x = 85,417,343,242.36 - Step 5: Solve for x
x = 85,417,343,242.36/298,507.28 - Step 6: Final answer
x = 286,148.28
Related Problems
Find fourth proportional to 149,253.64, 205,619.72 and 103,853.54
Half scale
Find fourth proportional to 597,014.55, 822,478.86 and 415,414.17
Double scale
Find fourth proportional to 298,508.28, 411,240.81 and 207,708.09
Similar ratio
Find fourth proportional to 447,760.91, 616,859.15 and 311,560.63
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.