Finding the Fourth Proportional to 371,638,395.37, 512,715,832.76 and 212,783,620.24
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Solution
The fourth proportional to 371,638,395.37, 512,715,832.76 and 212,783,620.24 is: 293,558,287.87
Step by Step Solution
- Step 1: Write the proportion equation
371,638,395.37 : 512,715,832.76 = 212,783,620.24 : x - Step 2: Convert to fraction form
371,638,395.37/512,715,832.76 = 212,783,620.24/x - Step 3: Cross multiply
371,638,395.37x = 512,715,832.76 × 212,783,620.24 - Step 4: Simplify right side
371,638,395.37x = 109,097,531,050,212,048 - Step 5: Solve for x
x = 109,097,531,050,212,048/371,638,395.37 - Step 6: Final answer
x = 293,558,287.87
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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.