Finding the Fourth Proportional to 405,408.06, 559,511.79 and 235,642.20
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Solution
The fourth proportional to 405,408.06, 559,511.79 and 235,642.20 is: 325,214.52
Step by Step Solution
- Step 1: Write the proportion equation
405,408.06 : 559,511.79 = 235,642.20 : x - Step 2: Convert to fraction form
405,408.06/559,511.79 = 235,642.20/x - Step 3: Cross multiply
405,408.06x = 559,511.79 × 235,642.20 - Step 4: Simplify right side
405,408.06x = 131,844,589,121.54 - Step 5: Solve for x
x = 131,844,589,121.54/405,408.06 - Step 6: Final answer
x = 325,214.52
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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.