Finding the Fourth Proportional to 221,115,759.75, 305,138,889.86 and 122,002,675.83
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Solution
The fourth proportional to 221,115,759.75, 305,138,889.86 and 122,002,675.83 is: 168,363,218.90
Step by Step Solution
- Step 1: Write the proportion equation
221,115,759.75 : 305,138,889.86 = 122,002,675.83 : x - Step 2: Convert to fraction form
221,115,759.75/305,138,889.86 = 122,002,675.83/x - Step 3: Cross multiply
221,115,759.75x = 305,138,889.86 × 122,002,675.83 - Step 4: Simplify right side
221,115,759.75x = 37,227,761,062,105,640 - Step 5: Solve for x
x = 37,227,761,062,105,640/221,115,759.75 - Step 6: Final answer
x = 168,363,218.90
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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.