Finding the Fourth Proportional to 319,939.84, 479,850.72 and 117,491.68
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Solution
The fourth proportional to 319,939.84, 479,850.72 and 117,491.68 is: 176,215.84
Step by Step Solution
- Step 1: Write the proportion equation
319,939.84 : 479,850.72 = 117,491.68 : x - Step 2: Convert to fraction form
319,939.84/479,850.72 = 117,491.68/x - Step 3: Cross multiply
319,939.84x = 479,850.72 × 117,491.68 - Step 4: Simplify right side
319,939.84x = 56,378,467,242.01 - Step 5: Solve for x
x = 56,378,467,242.01/319,939.84 - Step 6: Final answer
x = 176,215.84
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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.