Finding the Fourth Proportional to 221,137.23, 305,169.47 and 125,644.05
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Solution
The fourth proportional to 221,137.23, 305,169.47 and 125,644.05 is: 173,388.84
Step by Step Solution
- Step 1: Write the proportion equation
221,137.23 : 305,169.47 = 125,644.05 : x - Step 2: Convert to fraction form
221,137.23/305,169.47 = 125,644.05/x - Step 3: Cross multiply
221,137.23x = 305,169.47 × 125,644.05 - Step 4: Simplify right side
221,137.23x = 38,342,727,518.93 - Step 5: Solve for x
x = 38,342,727,518.93/221,137.23 - Step 6: Final answer
x = 173,388.84
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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.