Finding the Fourth Proportional to 305,890.24, 422,128.32 and 169,936.91
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Solution
The fourth proportional to 305,890.24, 422,128.32 and 169,936.91 is: 234,512.82
Step by Step Solution
- Step 1: Write the proportion equation
305,890.24 : 422,128.32 = 169,936.91 : x - Step 2: Convert to fraction form
305,890.24/422,128.32 = 169,936.91/x - Step 3: Cross multiply
305,890.24x = 422,128.32 × 169,936.91 - Step 4: Simplify right side
305,890.24x = 71,735,182,324.29 - Step 5: Solve for x
x = 71,735,182,324.29/305,890.24 - Step 6: Final answer
x = 234,512.82
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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.