Finding the Fourth Proportional to 422,806.21, 583,468.12 and 231,819.13
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Solution
The fourth proportional to 422,806.21, 583,468.12 and 231,819.13 is: 319,907.96
Step by Step Solution
- Step 1: Write the proportion equation
422,806.21 : 583,468.12 = 231,819.13 : x - Step 2: Convert to fraction form
422,806.21/583,468.12 = 231,819.13/x - Step 3: Cross multiply
422,806.21x = 583,468.12 × 231,819.13 - Step 4: Simplify right side
422,806.21x = 135,259,071,961.14 - Step 5: Solve for x
x = 135,259,071,961.14/422,806.21 - Step 6: Final answer
x = 319,907.96
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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.