Finding the Fourth Proportional to 221,709.36, 332,553.96 and 81,457.68
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Solution
The fourth proportional to 221,709.36, 332,553.96 and 81,457.68 is: 122,182.82
Step by Step Solution
- Step 1: Write the proportion equation
221,709.36 : 332,553.96 = 81,457.68 : x - Step 2: Convert to fraction form
221,709.36/332,553.96 = 81,457.68/x - Step 3: Cross multiply
221,709.36x = 332,553.96 × 81,457.68 - Step 4: Simplify right side
221,709.36x = 27,089,074,056.41 - Step 5: Solve for x
x = 27,089,074,056.41/221,709.36 - Step 6: Final answer
x = 122,182.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.