Finding the Fourth Proportional to 221,003.53, 305,021.84 and 130,381.97
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Solution
The fourth proportional to 221,003.53, 305,021.84 and 130,381.97 is: 179,948.92
Step by Step Solution
- Step 1: Write the proportion equation
221,003.53 : 305,021.84 = 130,381.97 : x - Step 2: Convert to fraction form
221,003.53/305,021.84 = 130,381.97/x - Step 3: Cross multiply
221,003.53x = 305,021.84 × 130,381.97 - Step 4: Simplify right side
221,003.53x = 39,769,346,215.21 - Step 5: Solve for x
x = 39,769,346,215.21/221,003.53 - Step 6: Final answer
x = 179,948.92
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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.