Finding the Fourth Proportional to 281,323.68, 388,212.12 and 153,975.12
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Solution
The fourth proportional to 281,323.68, 388,212.12 and 153,975.12 is: 212,477.70
Step by Step Solution
- Step 1: Write the proportion equation
281,323.68 : 388,212.12 = 153,975.12 : x - Step 2: Convert to fraction form
281,323.68/388,212.12 = 153,975.12/x - Step 3: Cross multiply
281,323.68x = 388,212.12 × 153,975.12 - Step 4: Simplify right side
281,323.68x = 59,775,007,762.45 - Step 5: Solve for x
x = 59,775,007,762.45/281,323.68 - Step 6: Final answer
x = 212,477.70
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1.5x scale
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.