Finding the Fourth Proportional to 639,238.71, 958,184.01 and 212,660.60
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Solution
The fourth proportional to 639,238.71, 958,184.01 and 212,660.60 is: 318,766.65
Step by Step Solution
- Step 1: Write the proportion equation
639,238.71 : 958,184.01 = 212,660.60 : x - Step 2: Convert to fraction form
639,238.71/958,184.01 = 212,660.60/x - Step 3: Cross multiply
639,238.71x = 958,184.01 × 212,660.60 - Step 4: Simplify right side
639,238.71x = 203,767,981,686.09 - Step 5: Solve for x
x = 203,767,981,686.09/639,238.71 - Step 6: Final answer
x = 318,766.65
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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.