Finding the Fourth Proportional to 221,685.23, 305,816.00 and 130,997.31
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Solution
The fourth proportional to 221,685.23, 305,816.00 and 130,997.31 is: 180,711.51
Step by Step Solution
- Step 1: Write the proportion equation
221,685.23 : 305,816.00 = 130,997.31 : x - Step 2: Convert to fraction form
221,685.23/305,816.00 = 130,997.31/x - Step 3: Cross multiply
221,685.23x = 305,816.00 × 130,997.31 - Step 4: Simplify right side
221,685.23x = 40,061,072,699.97 - Step 5: Solve for x
x = 40,061,072,699.97/221,685.23 - Step 6: Final answer
x = 180,711.51
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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.