Finding the Fourth Proportional to 385,415.92, 531,874.70 and 213,345.80
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Solution
The fourth proportional to 385,415.92, 531,874.70 and 213,345.80 is: 294,417.61
Step by Step Solution
- Step 1: Write the proportion equation
385,415.92 : 531,874.70 = 213,345.80 : x - Step 2: Convert to fraction form
385,415.92/531,874.70 = 213,345.80/x - Step 3: Cross multiply
385,415.92x = 531,874.70 × 213,345.80 - Step 4: Simplify right side
385,415.92x = 113,473,233,371.26 - Step 5: Solve for x
x = 113,473,233,371.26/385,415.92 - Step 6: Final answer
x = 294,417.61
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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.