Finding the Fourth Proportional to 215,821,736.80, 323,732,605.20 and 193,146,920.80
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Solution
The fourth proportional to 215,821,736.80, 323,732,605.20 and 193,146,920.80 is: 289,720,381.20
Step by Step Solution
- Step 1: Write the proportion equation
215,821,736.80 : 323,732,605.20 = 193,146,920.80 : x - Step 2: Convert to fraction form
215,821,736.80/323,732,605.20 = 193,146,920.80/x - Step 3: Cross multiply
215,821,736.80x = 323,732,605.20 × 193,146,920.80 - Step 4: Simplify right side
215,821,736.80x = 62,527,955,856,942,072 - Step 5: Solve for x
x = 62,527,955,856,942,072/215,821,736.80 - Step 6: Final answer
x = 289,720,381.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.