Finding the Fourth Proportional to 316,028.16, 436,115.88 and 172,786.68
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Solution
The fourth proportional to 316,028.16, 436,115.88 and 172,786.68 is: 238,443.99
Step by Step Solution
- Step 1: Write the proportion equation
316,028.16 : 436,115.88 = 172,786.68 : x - Step 2: Convert to fraction form
316,028.16/436,115.88 = 172,786.68/x - Step 3: Cross multiply
316,028.16x = 436,115.88 × 172,786.68 - Step 4: Simplify right side
316,028.16x = 75,355,015,000.48 - Step 5: Solve for x
x = 75,355,015,000.48/316,028.16 - Step 6: Final answer
x = 238,443.99
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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.