Finding the Fourth Proportional to 281,448.30, 388,386.99 and 154,121.70
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Solution
The fourth proportional to 281,448.30, 388,386.99 and 154,121.70 is: 212,681.56
Step by Step Solution
- Step 1: Write the proportion equation
281,448.30 : 388,386.99 = 154,121.70 : x - Step 2: Convert to fraction form
281,448.30/388,386.99 = 154,121.70/x - Step 3: Cross multiply
281,448.30x = 388,386.99 × 154,121.70 - Step 4: Simplify right side
281,448.30x = 59,858,863,156.68 - Step 5: Solve for x
x = 59,858,863,156.68/281,448.30 - Step 6: Final answer
x = 212,681.56
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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.