Finding the Fourth Proportional to 220,212,316.80, 329,864,356.80 and 129,059,625.60
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Solution
The fourth proportional to 220,212,316.80, 329,864,356.80 and 129,059,625.60 is: 193,323,293.66
Step by Step Solution
- Step 1: Write the proportion equation
220,212,316.80 : 329,864,356.80 = 129,059,625.60 : x - Step 2: Convert to fraction form
220,212,316.80/329,864,356.80 = 129,059,625.60/x - Step 3: Cross multiply
220,212,316.80x = 329,864,356.80 × 129,059,625.60 - Step 4: Simplify right side
220,212,316.80x = 42,572,170,387,392,816 - Step 5: Solve for x
x = 42,572,170,387,392,816/220,212,316.80 - Step 6: Final answer
x = 193,323,293.66
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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.