Finding the Fourth Proportional to 456,115.20, 684,318.60 and 156,787.80
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Solution
The fourth proportional to 456,115.20, 684,318.60 and 156,787.80 is: 235,231.82
Step by Step Solution
- Step 1: Write the proportion equation
456,115.20 : 684,318.60 = 156,787.80 : x - Step 2: Convert to fraction form
456,115.20/684,318.60 = 156,787.80/x - Step 3: Cross multiply
456,115.20x = 684,318.60 × 156,787.80 - Step 4: Simplify right side
456,115.20x = 107,292,807,793.08 - Step 5: Solve for x
x = 107,292,807,793.08/456,115.20 - Step 6: Final answer
x = 235,231.82
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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.