Finding the Fourth Proportional to 221,734.41, 305,994.84 and 121,132.41
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Solution
The fourth proportional to 221,734.41, 305,994.84 and 121,132.41 is: 167,163.47
Step by Step Solution
- Step 1: Write the proportion equation
221,734.41 : 305,994.84 = 121,132.41 : x - Step 2: Convert to fraction form
221,734.41/305,994.84 = 121,132.41/x - Step 3: Cross multiply
221,734.41x = 305,994.84 × 121,132.41 - Step 4: Simplify right side
221,734.41x = 37,065,892,416.76 - Step 5: Solve for x
x = 37,065,892,416.76/221,734.41 - Step 6: Final answer
x = 167,163.47
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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.