Finding the Fourth Proportional to 281,052.99, 387,859.28 and 153,728.58
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Solution
The fourth proportional to 281,052.99, 387,859.28 and 153,728.58 is: 212,148.81
Step by Step Solution
- Step 1: Write the proportion equation
281,052.99 : 387,859.28 = 153,728.58 : x - Step 2: Convert to fraction form
281,052.99/387,859.28 = 153,728.58/x - Step 3: Cross multiply
281,052.99x = 387,859.28 × 153,728.58 - Step 4: Simplify right side
281,052.99x = 59,625,057,040.05 - Step 5: Solve for x
x = 59,625,057,040.05/281,052.99 - Step 6: Final answer
x = 212,148.81
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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.