Finding the Fourth Proportional to 221,096,971.22, 305,112,116.28 and 121,981,896.08
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Solution
The fourth proportional to 221,096,971.22, 305,112,116.28 and 121,981,896.08 is: 168,334,076.47
Step by Step Solution
- Step 1: Write the proportion equation
221,096,971.22 : 305,112,116.28 = 121,981,896.08 : x - Step 2: Convert to fraction form
221,096,971.22/305,112,116.28 = 121,981,896.08/x - Step 3: Cross multiply
221,096,971.22x = 305,112,116.28 × 121,981,896.08 - Step 4: Simplify right side
221,096,971.22x = 37,218,154,460,815,832 - Step 5: Solve for x
x = 37,218,154,460,815,832/221,096,971.22 - Step 6: Final answer
x = 168,334,076.47
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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.