Finding the Fourth Proportional to 316,491.40, 436,763.28 and 173,249.02
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Solution
The fourth proportional to 316,491.40, 436,763.28 and 173,249.02 is: 239,086.47
Step by Step Solution
- Step 1: Write the proportion equation
316,491.40 : 436,763.28 = 173,249.02 : x - Step 2: Convert to fraction form
316,491.40/436,763.28 = 173,249.02/x - Step 3: Cross multiply
316,491.40x = 436,763.28 × 173,249.02 - Step 4: Simplify right side
316,491.40x = 75,668,810,231.99 - Step 5: Solve for x
x = 75,668,810,231.99/316,491.40 - Step 6: Final answer
x = 239,086.47
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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.