Finding the Fourth Proportional to 221,645.41, 305,794.77 and 126,128.18
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Solution
The fourth proportional to 221,645.41, 305,794.77 and 126,128.18 is: 174,013.70
Step by Step Solution
- Step 1: Write the proportion equation
221,645.41 : 305,794.77 = 126,128.18 : x - Step 2: Convert to fraction form
221,645.41/305,794.77 = 126,128.18/x - Step 3: Cross multiply
221,645.41x = 305,794.77 × 126,128.18 - Step 4: Simplify right side
221,645.41x = 38,569,337,793.62 - Step 5: Solve for x
x = 38,569,337,793.62/221,645.41 - Step 6: Final answer
x = 174,013.70
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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.