Finding the Fourth Proportional to 281,122.16, 387,975.28 and 153,816.88
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Solution
The fourth proportional to 281,122.16, 387,975.28 and 153,816.88 is: 212,281.90
Step by Step Solution
- Step 1: Write the proportion equation
281,122.16 : 387,975.28 = 153,816.88 : x - Step 2: Convert to fraction form
281,122.16/387,975.28 = 153,816.88/x - Step 3: Cross multiply
281,122.16x = 387,975.28 × 153,816.88 - Step 4: Simplify right side
281,122.16x = 59,677,147,086.73 - Step 5: Solve for x
x = 59,677,147,086.73/281,122.16 - Step 6: Final answer
x = 212,281.90
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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.