Finding the Fourth Proportional to 289,081,121.09, 398,932,453.08 and 156,922,207.16
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Solution
The fourth proportional to 289,081,121.09, 398,932,453.08 and 156,922,207.16 is: 216,552,920.54
Step by Step Solution
- Step 1: Write the proportion equation
289,081,121.09 : 398,932,453.08 = 156,922,207.16 : x - Step 2: Convert to fraction form
289,081,121.09/398,932,453.08 = 156,922,207.16/x - Step 3: Cross multiply
289,081,121.09x = 398,932,453.08 × 156,922,207.16 - Step 4: Simplify right side
289,081,121.09x = 62,601,361,043,072,072 - Step 5: Solve for x
x = 62,601,361,043,072,072/289,081,121.09 - Step 6: Final answer
x = 216,552,920.54
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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.