Finding the Fourth Proportional to 386,819.81, 580,236.87 and 134,108.53
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Solution
The fourth proportional to 386,819.81, 580,236.87 and 134,108.53 is: 201,165.27
Step by Step Solution
- Step 1: Write the proportion equation
386,819.81 : 580,236.87 = 134,108.53 : x - Step 2: Convert to fraction form
386,819.81/580,236.87 = 134,108.53/x - Step 3: Cross multiply
386,819.81x = 580,236.87 × 134,108.53 - Step 4: Simplify right side
386,819.81x = 77,814,712,236.91 - Step 5: Solve for x
x = 77,814,712,236.91/386,819.81 - Step 6: Final answer
x = 201,165.27
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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.