Finding the Fourth Proportional to 378,132,497.20, 567,198,745.80 and 236,202,320.80
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Solution
The fourth proportional to 378,132,497.20, 567,198,745.80 and 236,202,320.80 is: 354,303,481.20
Step by Step Solution
- Step 1: Write the proportion equation
378,132,497.20 : 567,198,745.80 = 236,202,320.80 : x - Step 2: Convert to fraction form
378,132,497.20/567,198,745.80 = 236,202,320.80/x - Step 3: Cross multiply
378,132,497.20x = 567,198,745.80 × 236,202,320.80 - Step 4: Simplify right side
378,132,497.20x = 133,973,660,112,809,248 - Step 5: Solve for x
x = 133,973,660,112,809,248/378,132,497.20 - Step 6: Final answer
x = 354,303,481.20
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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.