Finding the Fourth Proportional to 371,388.15, 512,517.74 and 218,432.79
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Solution
The fourth proportional to 371,388.15, 512,517.74 and 218,432.79 is: 301,438.48
Step by Step Solution
- Step 1: Write the proportion equation
371,388.15 : 512,517.74 = 218,432.79 : x - Step 2: Convert to fraction form
371,388.15/512,517.74 = 218,432.79/x - Step 3: Cross multiply
371,388.15x = 512,517.74 × 218,432.79 - Step 4: Simplify right side
371,388.15x = 111,950,676,217.94 - Step 5: Solve for x
x = 111,950,676,217.94/371,388.15 - Step 6: Final answer
x = 301,438.48
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.