Finding the Fourth Proportional to 378,387.21, 567,318.38 and 201,018.78
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Solution
The fourth proportional to 378,387.21, 567,318.38 and 201,018.78 is: 301,388.75
Step by Step Solution
- Step 1: Write the proportion equation
378,387.21 : 567,318.38 = 201,018.78 : x - Step 2: Convert to fraction form
378,387.21/567,318.38 = 201,018.78/x - Step 3: Cross multiply
378,387.21x = 567,318.38 × 201,018.78 - Step 4: Simplify right side
378,387.21x = 114,041,648,744.81 - Step 5: Solve for x
x = 114,041,648,744.81/378,387.21 - Step 6: Final answer
x = 301,388.75
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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.