Finding the Fourth Proportional to 391,634.73, 540,415.22 and 230,480.19
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Solution
The fourth proportional to 391,634.73, 540,415.22 and 230,480.19 is: 318,038.70
Step by Step Solution
- Step 1: Write the proportion equation
391,634.73 : 540,415.22 = 230,480.19 : x - Step 2: Convert to fraction form
391,634.73/540,415.22 = 230,480.19/x - Step 3: Cross multiply
391,634.73x = 540,415.22 × 230,480.19 - Step 4: Simplify right side
391,634.73x = 124,555,001,432.09 - Step 5: Solve for x
x = 124,555,001,432.09/391,634.73 - Step 6: Final answer
x = 318,038.70
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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.