Finding the Fourth Proportional to 281,063.49, 387,857.90 and 160,243.68
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Solution
The fourth proportional to 281,063.49, 387,857.90 and 160,243.68 is: 221,130.75
Step by Step Solution
- Step 1: Write the proportion equation
281,063.49 : 387,857.90 = 160,243.68 : x - Step 2: Convert to fraction form
281,063.49/387,857.90 = 160,243.68/x - Step 3: Cross multiply
281,063.49x = 387,857.90 × 160,243.68 - Step 4: Simplify right side
281,063.49x = 62,151,779,068.15 - Step 5: Solve for x
x = 62,151,779,068.15/281,063.49 - Step 6: Final answer
x = 221,130.75
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1.5x scale
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.