Finding the Fourth Proportional to 422,013.23, 582,378.28 and 231,026.63
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Solution
The fourth proportional to 422,013.23, 582,378.28 and 231,026.63 is: 318,816.75
Step by Step Solution
- Step 1: Write the proportion equation
422,013.23 : 582,378.28 = 231,026.63 : x - Step 2: Convert to fraction form
422,013.23/582,378.28 = 231,026.63/x - Step 3: Cross multiply
422,013.23x = 582,378.28 × 231,026.63 - Step 4: Simplify right side
422,013.23x = 134,544,887,924.14 - Step 5: Solve for x
x = 134,544,887,924.14/422,013.23 - Step 6: Final answer
x = 318,816.75
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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.