Finding the Fourth Proportional to 392,804.93, 589,465.81 and 215,436.53
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Solution
The fourth proportional to 392,804.93, 589,465.81 and 215,436.53 is: 323,296.53
Step by Step Solution
- Step 1: Write the proportion equation
392,804.93 : 589,465.81 = 215,436.53 : x - Step 2: Convert to fraction form
392,804.93/589,465.81 = 215,436.53/x - Step 3: Cross multiply
392,804.93x = 589,465.81 × 215,436.53 - Step 4: Simplify right side
392,804.93x = 126,992,470,403.00 - Step 5: Solve for x
x = 126,992,470,403.00/392,804.93 - Step 6: Final answer
x = 323,296.53
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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.