Finding the Fourth Proportional to 285,128.13, 393,476.82 and 165,896.13
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Solution
The fourth proportional to 285,128.13, 393,476.82 and 165,896.13 is: 228,936.66
Step by Step Solution
- Step 1: Write the proportion equation
285,128.13 : 393,476.82 = 165,896.13 : x - Step 2: Convert to fraction form
285,128.13/393,476.82 = 165,896.13/x - Step 3: Cross multiply
285,128.13x = 393,476.82 × 165,896.13 - Step 4: Simplify right side
285,128.13x = 65,276,281,682.71 - Step 5: Solve for x
x = 65,276,281,682.71/285,128.13 - Step 6: Final answer
x = 228,936.66
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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.