Finding the Fourth Proportional to 317,128.36, 474,759.42 and 211,685.80
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Solution
The fourth proportional to 317,128.36, 474,759.42 and 211,685.80 is: 316,905.83
Step by Step Solution
- Step 1: Write the proportion equation
317,128.36 : 474,759.42 = 211,685.80 : x - Step 2: Convert to fraction form
317,128.36/474,759.42 = 211,685.80/x - Step 3: Cross multiply
317,128.36x = 474,759.42 × 211,685.80 - Step 4: Simplify right side
317,128.36x = 100,499,827,630.24 - Step 5: Solve for x
x = 100,499,827,630.24/317,128.36 - Step 6: Final answer
x = 316,905.83
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.