Finding the Fourth Proportional to 221,659.07, 305,896.84 and 121,057.07
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Solution
The fourth proportional to 221,659.07, 305,896.84 and 121,057.07 is: 167,062.75
Step by Step Solution
- Step 1: Write the proportion equation
221,659.07 : 305,896.84 = 121,057.07 : x - Step 2: Convert to fraction form
221,659.07/305,896.84 = 121,057.07/x - Step 3: Cross multiply
221,659.07x = 305,896.84 × 121,057.07 - Step 4: Simplify right side
221,659.07x = 37,030,973,340.53 - Step 5: Solve for x
x = 37,030,973,340.53/221,659.07 - Step 6: Final answer
x = 167,062.75
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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.