Finding the Fourth Proportional to 394,187.84, 543,965.76 and 224,389.12
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Solution
The fourth proportional to 394,187.84, 543,965.76 and 224,389.12 is: 309,649.32
Step by Step Solution
- Step 1: Write the proportion equation
394,187.84 : 543,965.76 = 224,389.12 : x - Step 2: Convert to fraction form
394,187.84/543,965.76 = 224,389.12/x - Step 3: Cross multiply
394,187.84x = 543,965.76 × 224,389.12 - Step 4: Simplify right side
394,187.84x = 122,059,998,196.53 - Step 5: Solve for x
x = 122,059,998,196.53/394,187.84 - Step 6: Final answer
x = 309,649.32
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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.