Finding the Fourth Proportional to 209,939,015.05, 289,715,965.48 and 117,119,522.99
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Solution
The fourth proportional to 209,939,015.05, 289,715,965.48 and 117,119,522.99 is: 161,625,011.31
Step by Step Solution
- Step 1: Write the proportion equation
209,939,015.05 : 289,715,965.48 = 117,119,522.99 : x - Step 2: Convert to fraction form
209,939,015.05/289,715,965.48 = 117,119,522.99/x - Step 3: Cross multiply
209,939,015.05x = 289,715,965.48 × 117,119,522.99 - Step 4: Simplify right side
209,939,015.05x = 33,931,395,680,475,596 - Step 5: Solve for x
x = 33,931,395,680,475,596/209,939,015.05 - Step 6: Final answer
x = 161,625,011.31
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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.