Finding the Fourth Proportional to 478,813.28, 718,383.95 and 163,491.62
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Solution
The fourth proportional to 478,813.28, 718,383.95 and 163,491.62 is: 245,293.44
Step by Step Solution
- Step 1: Write the proportion equation
478,813.28 : 718,383.95 = 163,491.62 : x - Step 2: Convert to fraction form
478,813.28/718,383.95 = 163,491.62/x - Step 3: Cross multiply
478,813.28x = 718,383.95 × 163,491.62 - Step 4: Simplify right side
478,813.28x = 117,449,757,972.19 - Step 5: Solve for x
x = 117,449,757,972.19/478,813.28 - Step 6: Final answer
x = 245,293.44
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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.