Finding the Fourth Proportional to 319,628.21, 479,317.02 and 119,839.68
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Solution
The fourth proportional to 319,628.21, 479,317.02 and 119,839.68 is: 179,712.55
Step by Step Solution
- Step 1: Write the proportion equation
319,628.21 : 479,317.02 = 119,839.68 : x - Step 2: Convert to fraction form
319,628.21/479,317.02 = 119,839.68/x - Step 3: Cross multiply
319,628.21x = 479,317.02 × 119,839.68 - Step 4: Simplify right side
319,628.21x = 57,441,198,295.35 - Step 5: Solve for x
x = 57,441,198,295.35/319,628.21 - Step 6: Final answer
x = 179,712.55
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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.