Finding the Fourth Proportional to 218,396,540.40, 327,169,657.80 and 121,178,266.80
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Solution
The fourth proportional to 218,396,540.40, 327,169,657.80 and 121,178,266.80 is: 181,531,502.33
Step by Step Solution
- Step 1: Write the proportion equation
218,396,540.40 : 327,169,657.80 = 121,178,266.80 : x - Step 2: Convert to fraction form
218,396,540.40/327,169,657.80 = 121,178,266.80/x - Step 3: Cross multiply
218,396,540.40x = 327,169,657.80 × 121,178,266.80 - Step 4: Simplify right side
218,396,540.40x = 39,645,852,081,753,104 - Step 5: Solve for x
x = 39,645,852,081,753,104/218,396,540.40 - Step 6: Final answer
x = 181,531,502.33
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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.