Finding the Fourth Proportional to 236,431.21, 354,649.91 and 78,659.66
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Solution
The fourth proportional to 236,431.21, 354,649.91 and 78,659.66 is: 117,990.52
Step by Step Solution
- Step 1: Write the proportion equation
236,431.21 : 354,649.91 = 78,659.66 : x - Step 2: Convert to fraction form
236,431.21/354,649.91 = 78,659.66/x - Step 3: Cross multiply
236,431.21x = 354,649.91 × 78,659.66 - Step 4: Simplify right side
236,431.21x = 27,896,641,832.96 - Step 5: Solve for x
x = 27,896,641,832.96/236,431.21 - Step 6: Final answer
x = 117,990.52
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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.