Finding the Fourth Proportional to 385,416.92, 531,876.08 and 213,346.80
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Solution
The fourth proportional to 385,416.92, 531,876.08 and 213,346.80 is: 294,418.99
Step by Step Solution
- Step 1: Write the proportion equation
385,416.92 : 531,876.08 = 213,346.80 : x - Step 2: Convert to fraction form
385,416.92/531,876.08 = 213,346.80/x - Step 3: Cross multiply
385,416.92x = 531,876.08 × 213,346.80 - Step 4: Simplify right side
385,416.92x = 113,474,059,664.54 - Step 5: Solve for x
x = 113,474,059,664.54/385,416.92 - Step 6: Final answer
x = 294,418.99
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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.