Finding the Fourth Proportional to 209,091,028.19, 313,672,273.85 and 86,202,168.31
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Solution
The fourth proportional to 209,091,028.19, 313,672,273.85 and 86,202,168.31 is: 129,317,983.55
Step by Step Solution
- Step 1: Write the proportion equation
209,091,028.19 : 313,672,273.85 = 86,202,168.31 : x - Step 2: Convert to fraction form
209,091,028.19/313,672,273.85 = 86,202,168.31/x - Step 3: Cross multiply
209,091,028.19x = 313,672,273.85 × 86,202,168.31 - Step 4: Simplify right side
209,091,028.19x = 27,039,230,144,029,440 - Step 5: Solve for x
x = 27,039,230,144,029,440/209,091,028.19 - Step 6: Final answer
x = 129,317,983.55
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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.