Finding the Fourth Proportional to 275,296,992.38, 379,919,874.14 and 149,843,129.05
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Solution
The fourth proportional to 275,296,992.38, 379,919,874.14 and 149,843,129.05 is: 206,788,974.47
Step by Step Solution
- Step 1: Write the proportion equation
275,296,992.38 : 379,919,874.14 = 149,843,129.05 : x - Step 2: Convert to fraction form
275,296,992.38/379,919,874.14 = 149,843,129.05/x - Step 3: Cross multiply
275,296,992.38x = 379,919,874.14 × 149,843,129.05 - Step 4: Simplify right side
275,296,992.38x = 56,928,382,728,844,592 - Step 5: Solve for x
x = 56,928,382,728,844,592/275,296,992.38 - Step 6: Final answer
x = 206,788,974.47
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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.