Finding the Fourth Proportional to 396,818.12, 547,612.99 and 215,533.60
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Solution
The fourth proportional to 396,818.12, 547,612.99 and 215,533.60 is: 297,438.53
Step by Step Solution
- Step 1: Write the proportion equation
396,818.12 : 547,612.99 = 215,533.60 : x - Step 2: Convert to fraction form
396,818.12/547,612.99 = 215,533.60/x - Step 3: Cross multiply
396,818.12x = 547,612.99 × 215,533.60 - Step 4: Simplify right side
396,818.12x = 118,028,997,233.60 - Step 5: Solve for x
x = 118,028,997,233.60/396,818.12 - Step 6: Final answer
x = 297,438.53
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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.