Finding the Fourth Proportional to 207,421,211.70, 311,131,817.55 and 197,855,273.70
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Solution
The fourth proportional to 207,421,211.70, 311,131,817.55 and 197,855,273.70 is: 296,782,910.55
Step by Step Solution
- Step 1: Write the proportion equation
207,421,211.70 : 311,131,817.55 = 197,855,273.70 : x - Step 2: Convert to fraction form
207,421,211.70/311,131,817.55 = 197,855,273.70/x - Step 3: Cross multiply
207,421,211.70x = 311,131,817.55 × 197,855,273.70 - Step 4: Simplify right side
207,421,211.70x = 61,559,070,918,133,712 - Step 5: Solve for x
x = 61,559,070,918,133,712/207,421,211.70 - Step 6: Final answer
x = 296,782,910.55
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1.5x scale
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.