Finding the Fourth Proportional to 281,432.60, 388,376.34 and 154,107.08
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Solution
The fourth proportional to 281,432.60, 388,376.34 and 154,107.08 is: 212,667.42
Step by Step Solution
- Step 1: Write the proportion equation
281,432.60 : 388,376.34 = 154,107.08 : x - Step 2: Convert to fraction form
281,432.60/388,376.34 = 154,107.08/x - Step 3: Cross multiply
281,432.60x = 388,376.34 × 154,107.08 - Step 4: Simplify right side
281,432.60x = 59,851,543,698.49 - Step 5: Solve for x
x = 59,851,543,698.49/281,432.60 - Step 6: Final answer
x = 212,667.42
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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.