Finding the Fourth Proportional to 212,545,339.20, 293,318,236.80 and 119,720,311.20
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Solution
The fourth proportional to 212,545,339.20, 293,318,236.80 and 119,720,311.20 is: 165,217,222.46
Step by Step Solution
- Step 1: Write the proportion equation
212,545,339.20 : 293,318,236.80 = 119,720,311.20 : x - Step 2: Convert to fraction form
212,545,339.20/293,318,236.80 = 119,720,311.20/x - Step 3: Cross multiply
212,545,339.20x = 293,318,236.80 × 119,720,311.20 - Step 4: Simplify right side
212,545,339.20x = 35,116,150,590,331,296 - Step 5: Solve for x
x = 35,116,150,590,331,296/212,545,339.20 - Step 6: Final answer
x = 165,217,222.46
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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.