Finding the Fourth Proportional to 212,972.38, 319,424.70 and 70,805.84
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Solution
The fourth proportional to 212,972.38, 319,424.70 and 70,805.84 is: 106,197.50
Step by Step Solution
- Step 1: Write the proportion equation
212,972.38 : 319,424.70 = 70,805.84 : x - Step 2: Convert to fraction form
212,972.38/319,424.70 = 70,805.84/x - Step 3: Cross multiply
212,972.38x = 319,424.70 × 70,805.84 - Step 4: Simplify right side
212,972.38x = 22,617,134,200.25 - Step 5: Solve for x
x = 22,617,134,200.25/212,972.38 - Step 6: Final answer
x = 106,197.50
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1.5x scale
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.