Finding the Fourth Proportional to 317,305.20, 475,957.80 and 106,921.20
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Solution
The fourth proportional to 317,305.20, 475,957.80 and 106,921.20 is: 160,381.80
Step by Step Solution
- Step 1: Write the proportion equation
317,305.20 : 475,957.80 = 106,921.20 : x - Step 2: Convert to fraction form
317,305.20/475,957.80 = 106,921.20/x - Step 3: Cross multiply
317,305.20x = 475,957.80 × 106,921.20 - Step 4: Simplify right side
317,305.20x = 50,889,979,125.36 - Step 5: Solve for x
x = 50,889,979,125.36/317,305.20 - Step 6: Final answer
x = 160,381.80
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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.