Finding the Fourth Proportional to 212,915.20, 319,372.80 and 177,923.20
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Solution
The fourth proportional to 212,915.20, 319,372.80 and 177,923.20 is: 266,884.80
Step by Step Solution
- Step 1: Write the proportion equation
212,915.20 : 319,372.80 = 177,923.20 : x - Step 2: Convert to fraction form
212,915.20/319,372.80 = 177,923.20/x - Step 3: Cross multiply
212,915.20x = 319,372.80 × 177,923.20 - Step 4: Simplify right side
212,915.20x = 56,823,830,568.96 - Step 5: Solve for x
x = 56,823,830,568.96/212,915.20 - Step 6: Final answer
x = 266,884.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.