Finding the Fourth Proportional to 378,422.90, 522,350.12 and 225,509.08
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Solution
The fourth proportional to 378,422.90, 522,350.12 and 225,509.08 is: 311,277.92
Step by Step Solution
- Step 1: Write the proportion equation
378,422.90 : 522,350.12 = 225,509.08 : x - Step 2: Convert to fraction form
378,422.90/522,350.12 = 225,509.08/x - Step 3: Cross multiply
378,422.90x = 522,350.12 × 225,509.08 - Step 4: Simplify right side
378,422.90x = 117,794,693,967.91 - Step 5: Solve for x
x = 117,794,693,967.91/378,422.90 - Step 6: Final answer
x = 311,277.92
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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.