Finding the Fourth Proportional to 261,481,817.92, 360,884,138.40 and 198,654,529.12
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Solution
The fourth proportional to 261,481,817.92, 360,884,138.40 and 198,654,529.12 is: 274,173,053.99
Step by Step Solution
- Step 1: Write the proportion equation
261,481,817.92 : 360,884,138.40 = 198,654,529.12 : x - Step 2: Convert to fraction form
261,481,817.92/360,884,138.40 = 198,654,529.12/x - Step 3: Cross multiply
261,481,817.92x = 360,884,138.40 × 198,654,529.12 - Step 4: Simplify right side
261,481,817.92x = 71,691,268,580,728,904 - Step 5: Solve for x
x = 71,691,268,580,728,904/261,481,817.92 - Step 6: Final answer
x = 274,173,053.99
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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.