Finding the Fourth Proportional to 386,988.78, 580,519.80 and 150,349.68
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Solution
The fourth proportional to 386,988.78, 580,519.80 and 150,349.68 is: 225,538.75
Step by Step Solution
- Step 1: Write the proportion equation
386,988.78 : 580,519.80 = 150,349.68 : x - Step 2: Convert to fraction form
386,988.78/580,519.80 = 150,349.68/x - Step 3: Cross multiply
386,988.78x = 580,519.80 × 150,349.68 - Step 4: Simplify right side
386,988.78x = 87,280,966,163.66 - Step 5: Solve for x
x = 87,280,966,163.66/386,988.78 - Step 6: Final answer
x = 225,538.75
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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.