Finding the Fourth Proportional to 201,588,736.79, 278,206,438.60 and 122,207,144.04
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Solution
The fourth proportional to 201,588,736.79, 278,206,438.60 and 122,207,144.04 is: 168,654,334.84
Step by Step Solution
- Step 1: Write the proportion equation
201,588,736.79 : 278,206,438.60 = 122,207,144.04 : x - Step 2: Convert to fraction form
201,588,736.79/278,206,438.60 = 122,207,144.04/x - Step 3: Cross multiply
201,588,736.79x = 278,206,438.60 × 122,207,144.04 - Step 4: Simplify right side
201,588,736.79x = 33,998,814,314,845,620 - Step 5: Solve for x
x = 33,998,814,314,845,620/201,588,736.79 - Step 6: Final answer
x = 168,654,334.84
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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.