Finding the Fourth Proportional to 259,611.80, 389,417.70 and 119,643.80
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Solution
The fourth proportional to 259,611.80, 389,417.70 and 119,643.80 is: 179,465.70
Step by Step Solution
- Step 1: Write the proportion equation
259,611.80 : 389,417.70 = 119,643.80 : x - Step 2: Convert to fraction form
259,611.80/389,417.70 = 119,643.80/x - Step 3: Cross multiply
259,611.80x = 389,417.70 × 119,643.80 - Step 4: Simplify right side
259,611.80x = 46,591,413,415.26 - Step 5: Solve for x
x = 46,591,413,415.26/259,611.80 - Step 6: Final answer
x = 179,465.70
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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.