Finding the Fourth Proportional to 212,869,413.80, 319,304,120.70 and 132,247,845.80
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Solution
The fourth proportional to 212,869,413.80, 319,304,120.70 and 132,247,845.80 is: 198,371,768.70
Step by Step Solution
- Step 1: Write the proportion equation
212,869,413.80 : 319,304,120.70 = 132,247,845.80 : x - Step 2: Convert to fraction form
212,869,413.80/319,304,120.70 = 132,247,845.80/x - Step 3: Cross multiply
212,869,413.80x = 319,304,120.70 × 132,247,845.80 - Step 4: Simplify right side
212,869,413.80x = 42,227,282,117,638,184 - Step 5: Solve for x
x = 42,227,282,117,638,184/212,869,413.80 - Step 6: Final answer
x = 198,371,768.70
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1.5x scale
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.