Finding the Fourth Proportional to 281,310.64, 388,212.96 and 153,998.08
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Solution
The fourth proportional to 281,310.64, 388,212.96 and 153,998.08 is: 212,519.69
Step by Step Solution
- Step 1: Write the proportion equation
281,310.64 : 388,212.96 = 153,998.08 : x - Step 2: Convert to fraction form
281,310.64/388,212.96 = 153,998.08/x - Step 3: Cross multiply
281,310.64x = 388,212.96 × 153,998.08 - Step 4: Simplify right side
281,310.64x = 59,784,050,471.12 - Step 5: Solve for x
x = 59,784,050,471.12/281,310.64 - Step 6: Final answer
x = 212,519.69
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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.