Finding the Fourth Proportional to 221,040.72, 305,128.08 and 167,340.96
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Solution
The fourth proportional to 221,040.72, 305,128.08 and 167,340.96 is: 231,000.09
Step by Step Solution
- Step 1: Write the proportion equation
221,040.72 : 305,128.08 = 167,340.96 : x - Step 2: Convert to fraction form
221,040.72/305,128.08 = 167,340.96/x - Step 3: Cross multiply
221,040.72x = 305,128.08 × 167,340.96 - Step 4: Simplify right side
221,040.72x = 51,060,425,830.16 - Step 5: Solve for x
x = 51,060,425,830.16/221,040.72 - Step 6: Final answer
x = 231,000.09
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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.