Finding the Fourth Proportional to 385,112.81, 531,444.42 and 213,037.62
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Solution
The fourth proportional to 385,112.81, 531,444.42 and 213,037.62 is: 293,985.69
Step by Step Solution
- Step 1: Write the proportion equation
385,112.81 : 531,444.42 = 213,037.62 : x - Step 2: Convert to fraction form
385,112.81/531,444.42 = 213,037.62/x - Step 3: Cross multiply
385,112.81x = 531,444.42 × 213,037.62 - Step 4: Simplify right side
385,112.81x = 113,217,654,399.08 - Step 5: Solve for x
x = 113,217,654,399.08/385,112.81 - Step 6: Final answer
x = 293,985.69
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1.5x scale
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.