Finding the Fourth Proportional to 221,469.93, 305,532.64 and 135,432.68
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Solution
The fourth proportional to 221,469.93, 305,532.64 and 135,432.68 is: 186,838.47
Step by Step Solution
- Step 1: Write the proportion equation
221,469.93 : 305,532.64 = 135,432.68 : x - Step 2: Convert to fraction form
221,469.93/305,532.64 = 135,432.68/x - Step 3: Cross multiply
221,469.93x = 305,532.64 × 135,432.68 - Step 4: Simplify right side
221,469.93x = 41,379,102,904.30 - Step 5: Solve for x
x = 41,379,102,904.30/221,469.93 - Step 6: Final answer
x = 186,838.47
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1.5x scale
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.