Finding the Fourth Proportional to 280,079.70, 386,440.84 and 165,361.02
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Solution
The fourth proportional to 280,079.70, 386,440.84 and 165,361.02 is: 228,157.38
Step by Step Solution
- Step 1: Write the proportion equation
280,079.70 : 386,440.84 = 165,361.02 : x - Step 2: Convert to fraction form
280,079.70/386,440.84 = 165,361.02/x - Step 3: Cross multiply
280,079.70x = 386,440.84 × 165,361.02 - Step 4: Simplify right side
280,079.70x = 63,902,251,472.06 - Step 5: Solve for x
x = 63,902,251,472.06/280,079.70 - Step 6: Final answer
x = 228,157.38
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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.