Finding the Fourth Proportional to 198,005,413.20, 296,890,021.80 and 121,383,430.80
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Solution
The fourth proportional to 198,005,413.20, 296,890,021.80 and 121,383,430.80 is: 182,002,748.48
Step by Step Solution
- Step 1: Write the proportion equation
198,005,413.20 : 296,890,021.80 = 121,383,430.80 : x - Step 2: Convert to fraction form
198,005,413.20/296,890,021.80 = 121,383,430.80/x - Step 3: Cross multiply
198,005,413.20x = 296,890,021.80 × 121,383,430.80 - Step 4: Simplify right side
198,005,413.20x = 36,037,529,416,370,792 - Step 5: Solve for x
x = 36,037,529,416,370,792/198,005,413.20 - Step 6: Final answer
x = 182,002,748.48
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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.