Finding the Fourth Proportional to 221,713.36, 332,559.96 and 81,461.68
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Solution
The fourth proportional to 221,713.36, 332,559.96 and 81,461.68 is: 122,188.82
Step by Step Solution
- Step 1: Write the proportion equation
221,713.36 : 332,559.96 = 81,461.68 : x - Step 2: Convert to fraction form
221,713.36/332,559.96 = 81,461.68/x - Step 3: Cross multiply
221,713.36x = 332,559.96 × 81,461.68 - Step 4: Simplify right side
221,713.36x = 27,090,893,042.33 - Step 5: Solve for x
x = 27,090,893,042.33/221,713.36 - Step 6: Final answer
x = 122,188.82
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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.