Finding the Fourth Proportional to 221,910.50, 306,236.50 and 121,308.50
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Solution
The fourth proportional to 221,910.50, 306,236.50 and 121,308.50 is: 167,405.74
Step by Step Solution
- Step 1: Write the proportion equation
221,910.50 : 306,236.50 = 121,308.50 : x - Step 2: Convert to fraction form
221,910.50/306,236.50 = 121,308.50/x - Step 3: Cross multiply
221,910.50x = 306,236.50 × 121,308.50 - Step 4: Simplify right side
221,910.50x = 37,149,090,460.25 - Step 5: Solve for x
x = 37,149,090,460.25/221,910.50 - Step 6: Final answer
x = 167,405.74
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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.