Finding the Fourth Proportional to 212,947.50, 319,475.25 and 79,828.14
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Solution
The fourth proportional to 212,947.50, 319,475.25 and 79,828.14 is: 119,762.45
Step by Step Solution
- Step 1: Write the proportion equation
212,947.50 : 319,475.25 = 79,828.14 : x - Step 2: Convert to fraction form
212,947.50/319,475.25 = 79,828.14/x - Step 3: Cross multiply
212,947.50x = 319,475.25 × 79,828.14 - Step 4: Simplify right side
212,947.50x = 25,503,114,983.54 - Step 5: Solve for x
x = 25,503,114,983.54/212,947.50 - Step 6: Final answer
x = 119,762.45
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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.