Finding the Fourth Proportional to 281,232.78, 388,102.50 and 153,908.07
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Solution
The fourth proportional to 281,232.78, 388,102.50 and 153,908.07 is: 212,393.83
Step by Step Solution
- Step 1: Write the proportion equation
281,232.78 : 388,102.50 = 153,908.07 : x - Step 2: Convert to fraction form
281,232.78/388,102.50 = 153,908.07/x - Step 3: Cross multiply
281,232.78x = 388,102.50 × 153,908.07 - Step 4: Simplify right side
281,232.78x = 59,732,106,737.18 - Step 5: Solve for x
x = 59,732,106,737.18/281,232.78 - Step 6: Final answer
x = 212,393.83
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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.