Finding the Fourth Proportional to 639,448.74, 958,965.44 and 212,869.98
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Solution
The fourth proportional to 639,448.74, 958,965.44 and 212,869.98 is: 319,235.84
Step by Step Solution
- Step 1: Write the proportion equation
639,448.74 : 958,965.44 = 212,869.98 : x - Step 2: Convert to fraction form
639,448.74/958,965.44 = 212,869.98/x - Step 3: Cross multiply
639,448.74x = 958,965.44 × 212,869.98 - Step 4: Simplify right side
639,448.74x = 204,134,954,033.49 - Step 5: Solve for x
x = 204,134,954,033.49/639,448.74 - Step 6: Final answer
x = 319,235.84
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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.