Finding the Fourth Proportional to 274,079.84, 378,247.74 and 153,221.64
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Solution
The fourth proportional to 274,079.84, 378,247.74 and 153,221.64 is: 211,455.68
Step by Step Solution
- Step 1: Write the proportion equation
274,079.84 : 378,247.74 = 153,221.64 : x - Step 2: Convert to fraction form
274,079.84/378,247.74 = 153,221.64/x - Step 3: Cross multiply
274,079.84x = 378,247.74 × 153,221.64 - Step 4: Simplify right side
274,079.84x = 57,955,739,049.09 - Step 5: Solve for x
x = 57,955,739,049.09/274,079.84 - Step 6: Final answer
x = 211,455.68
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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.