Finding the Fourth Proportional to 220,982,427.20, 331,473,640.80 and 186,970,203.20
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Solution
The fourth proportional to 220,982,427.20, 331,473,640.80 and 186,970,203.20 is: 280,455,304.80
Step by Step Solution
- Step 1: Write the proportion equation
220,982,427.20 : 331,473,640.80 = 186,970,203.20 : x - Step 2: Convert to fraction form
220,982,427.20/331,473,640.80 = 186,970,203.20/x - Step 3: Cross multiply
220,982,427.20x = 331,473,640.80 × 186,970,203.20 - Step 4: Simplify right side
220,982,427.20x = 61,975,693,975,819,808 - Step 5: Solve for x
x = 61,975,693,975,819,808/220,982,427.20 - Step 6: Final answer
x = 280,455,304.80
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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.