Finding the Fourth Proportional to 281,086.05, 387,919.81 and 160,230.21
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Solution
The fourth proportional to 281,086.05, 387,919.81 and 160,230.21 is: 221,129.70
Step by Step Solution
- Step 1: Write the proportion equation
281,086.05 : 387,919.81 = 160,230.21 : x - Step 2: Convert to fraction form
281,086.05/387,919.81 = 160,230.21/x - Step 3: Cross multiply
281,086.05x = 387,919.81 × 160,230.21 - Step 4: Simplify right side
281,086.05x = 62,156,473,641.96 - Step 5: Solve for x
x = 62,156,473,641.96/281,086.05 - Step 6: Final answer
x = 221,129.70
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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.