Finding the Fourth Proportional to 215,982,688.27, 298,055,917.24 and 121,916,634.97
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Solution
The fourth proportional to 215,982,688.27, 298,055,917.24 and 121,916,634.97 is: 168,244,847.56
Step by Step Solution
- Step 1: Write the proportion equation
215,982,688.27 : 298,055,917.24 = 121,916,634.97 : x - Step 2: Convert to fraction form
215,982,688.27/298,055,917.24 = 121,916,634.97/x - Step 3: Cross multiply
215,982,688.27x = 298,055,917.24 × 121,916,634.97 - Step 4: Simplify right side
215,982,688.27x = 36,337,974,463,322,576 - Step 5: Solve for x
x = 36,337,974,463,322,576/215,982,688.27 - Step 6: Final answer
x = 168,244,847.56
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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.