Finding the Fourth Proportional to 392,775.68, 588,614.45 and 212,471.91
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Solution
The fourth proportional to 392,775.68, 588,614.45 and 212,471.91 is: 318,410.84
Step by Step Solution
- Step 1: Write the proportion equation
392,775.68 : 588,614.45 = 212,471.91 : x - Step 2: Convert to fraction form
392,775.68/588,614.45 = 212,471.91/x - Step 3: Cross multiply
392,775.68x = 588,614.45 × 212,471.91 - Step 4: Simplify right side
392,775.68x = 125,064,035,382.74 - Step 5: Solve for x
x = 125,064,035,382.74/392,775.68 - Step 6: Final answer
x = 318,410.84
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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.