Finding the Fourth Proportional to 253,635.84, 380,689.92 and 129,070.08
Calculator
Solution
The fourth proportional to 253,635.84, 380,689.92 and 129,070.08 is: 193,725.30
Step by Step Solution
- Step 1: Write the proportion equation
253,635.84 : 380,689.92 = 129,070.08 : x - Step 2: Convert to fraction form
253,635.84/380,689.92 = 129,070.08/x - Step 3: Cross multiply
253,635.84x = 380,689.92 × 129,070.08 - Step 4: Simplify right side
253,635.84x = 49,135,678,429.59 - Step 5: Solve for x
x = 49,135,678,429.59/253,635.84 - Step 6: Final answer
x = 193,725.30
Related Problems
Find fourth proportional to 126,817.92, 190,344.96 and 64,535.04
Half scale
Find fourth proportional to 507,271.68, 761,379.84 and 258,140.16
Double scale
Find fourth proportional to 253,636.84, 380,691.42 and 129,071.08
Similar ratio
Find fourth proportional to 380,453.76, 571,034.88 and 193,605.12
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.