Finding the Fourth Proportional to 245,821.48, 339,214.26 and 138,370.12
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Solution
The fourth proportional to 245,821.48, 339,214.26 and 138,370.12 is: 190,939.86
Step by Step Solution
- Step 1: Write the proportion equation
245,821.48 : 339,214.26 = 138,370.12 : x - Step 2: Convert to fraction form
245,821.48/339,214.26 = 138,370.12/x - Step 3: Cross multiply
245,821.48x = 339,214.26 × 138,370.12 - Step 4: Simplify right side
245,821.48x = 46,937,117,861.91 - Step 5: Solve for x
x = 46,937,117,861.91/245,821.48 - Step 6: Final answer
x = 190,939.86
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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.