Finding the Fourth Proportional to 206,982,220.80, 310,473,331.20 and 61,438,245.60
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Solution
The fourth proportional to 206,982,220.80, 310,473,331.20 and 61,438,245.60 is: 92,157,368.40
Step by Step Solution
- Step 1: Write the proportion equation
206,982,220.80 : 310,473,331.20 = 61,438,245.60 : x - Step 2: Convert to fraction form
206,982,220.80/310,473,331.20 = 61,438,245.60/x - Step 3: Cross multiply
206,982,220.80x = 310,473,331.20 × 61,438,245.60 - Step 4: Simplify right side
206,982,220.80x = 19,074,936,774,515,744 - Step 5: Solve for x
x = 19,074,936,774,515,744/206,982,220.80 - Step 6: Final answer
x = 92,157,368.40
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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.