Finding the Fourth Proportional to 220,208,578.65, 303,907,201.70 and 121,106,791.53
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Solution
The fourth proportional to 220,208,578.65, 303,907,201.70 and 121,106,791.53 is: 167,138,021.35
Step by Step Solution
- Step 1: Write the proportion equation
220,208,578.65 : 303,907,201.70 = 121,106,791.53 : x - Step 2: Convert to fraction form
220,208,578.65/303,907,201.70 = 121,106,791.53/x - Step 3: Cross multiply
220,208,578.65x = 303,907,201.70 × 121,106,791.53 - Step 4: Simplify right side
220,208,578.65x = 36,805,226,120,142,024 - Step 5: Solve for x
x = 36,805,226,120,142,024/220,208,578.65 - Step 6: Final answer
x = 167,138,021.35
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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.