Finding the Fourth Proportional to 316,171.08, 436,310.69 and 172,928.05
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Solution
The fourth proportional to 316,171.08, 436,310.69 and 172,928.05 is: 238,637.75
Step by Step Solution
- Step 1: Write the proportion equation
316,171.08 : 436,310.69 = 172,928.05 : x - Step 2: Convert to fraction form
316,171.08/436,310.69 = 172,928.05/x - Step 3: Cross multiply
316,171.08x = 436,310.69 × 172,928.05 - Step 4: Simplify right side
316,171.08x = 75,450,354,860.44 - Step 5: Solve for x
x = 75,450,354,860.44/316,171.08 - Step 6: Final answer
x = 238,637.75
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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.