Finding the Fourth Proportional to 239,230,940.67, 330,138,647.24 and 129,222,654.75
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Solution
The fourth proportional to 239,230,940.67, 330,138,647.24 and 129,222,654.75 is: 178,327,236.07
Step by Step Solution
- Step 1: Write the proportion equation
239,230,940.67 : 330,138,647.24 = 129,222,654.75 : x - Step 2: Convert to fraction form
239,230,940.67/330,138,647.24 = 129,222,654.75/x - Step 3: Cross multiply
239,230,940.67x = 330,138,647.24 × 129,222,654.75 - Step 4: Simplify right side
239,230,940.67x = 42,661,392,431,280,448 - Step 5: Solve for x
x = 42,661,392,431,280,448/239,230,940.67 - Step 6: Final answer
x = 178,327,236.07
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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.