Finding the Fourth Proportional to 355,513,022.06, 490,608,690.62 and 198,882,744.73
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Solution
The fourth proportional to 355,513,022.06, 490,608,690.62 and 198,882,744.73 is: 274,458,590.61
Step by Step Solution
- Step 1: Write the proportion equation
355,513,022.06 : 490,608,690.62 = 198,882,744.73 : x - Step 2: Convert to fraction form
355,513,022.06/490,608,690.62 = 198,882,744.73/x - Step 3: Cross multiply
355,513,022.06x = 490,608,690.62 × 198,882,744.73 - Step 4: Simplify right side
355,513,022.06x = 97,573,602,976,676,064 - Step 5: Solve for x
x = 97,573,602,976,676,064/355,513,022.06 - Step 6: Final answer
x = 274,458,590.61
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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.