Finding the Fourth Proportional to 320,972.71, 442,936.91 and 177,729.67
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Solution
The fourth proportional to 320,972.71, 442,936.91 and 177,729.67 is: 245,263.94
Step by Step Solution
- Step 1: Write the proportion equation
320,972.71 : 442,936.91 = 177,729.67 : x - Step 2: Convert to fraction form
320,972.71/442,936.91 = 177,729.67/x - Step 3: Cross multiply
320,972.71x = 442,936.91 × 177,729.67 - Step 4: Simplify right side
320,972.71x = 78,723,032,007.14 - Step 5: Solve for x
x = 78,723,032,007.14/320,972.71 - Step 6: Final answer
x = 245,263.94
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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.