Finding the Fourth Proportional to 221,342.28, 305,451.99 and 120,740.28
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Solution
The fourth proportional to 221,342.28, 305,451.99 and 120,740.28 is: 166,621.39
Step by Step Solution
- Step 1: Write the proportion equation
221,342.28 : 305,451.99 = 120,740.28 : x - Step 2: Convert to fraction form
221,342.28/305,451.99 = 120,740.28/x - Step 3: Cross multiply
221,342.28x = 305,451.99 × 120,740.28 - Step 4: Simplify right side
221,342.28x = 36,880,358,799.16 - Step 5: Solve for x
x = 36,880,358,799.16/221,342.28 - Step 6: Final answer
x = 166,621.39
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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.