Finding the Fourth Proportional to 212,711,413.86, 293,783,888.70 and 142,975,725.84
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Solution
The fourth proportional to 212,711,413.86, 293,783,888.70 and 142,975,725.84 is: 197,469,256.42
Step by Step Solution
- Step 1: Write the proportion equation
212,711,413.86 : 293,783,888.70 = 142,975,725.84 : x - Step 2: Convert to fraction form
212,711,413.86/293,783,888.70 = 142,975,725.84/x - Step 3: Cross multiply
212,711,413.86x = 293,783,888.70 × 142,975,725.84 - Step 4: Simplify right side
212,711,413.86x = 42,003,964,726,980,272 - Step 5: Solve for x
x = 42,003,964,726,980,272/212,711,413.86 - Step 6: Final answer
x = 197,469,256.42
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.