Finding the Fourth Proportional to 380,836.19, 570,692.94 and 212,124.26
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Solution
The fourth proportional to 380,836.19, 570,692.94 and 212,124.26 is: 317,873.72
Step by Step Solution
- Step 1: Write the proportion equation
380,836.19 : 570,692.94 = 212,124.26 : x - Step 2: Convert to fraction form
380,836.19/570,692.94 = 212,124.26/x - Step 3: Cross multiply
380,836.19x = 570,692.94 × 212,124.26 - Step 4: Simplify right side
380,836.19x = 121,057,814,731.26 - Step 5: Solve for x
x = 121,057,814,731.26/380,836.19 - Step 6: Final answer
x = 317,873.72
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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.