Finding the Fourth Proportional to 281,149.10, 387,986.79 and 153,824.70
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Solution
The fourth proportional to 281,149.10, 387,986.79 and 153,824.70 is: 212,278.64
Step by Step Solution
- Step 1: Write the proportion equation
281,149.10 : 387,986.79 = 153,824.70 : x - Step 2: Convert to fraction form
281,149.10/387,986.79 = 153,824.70/x - Step 3: Cross multiply
281,149.10x = 387,986.79 × 153,824.70 - Step 4: Simplify right side
281,149.10x = 59,681,949,035.97 - Step 5: Solve for x
x = 59,681,949,035.97/281,149.10 - Step 6: Final answer
x = 212,278.64
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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.