Finding the Fourth Proportional to 291,228.21, 401,801.11 and 163,879.20
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Solution
The fourth proportional to 291,228.21, 401,801.11 and 163,879.20 is: 226,100.50
Step by Step Solution
- Step 1: Write the proportion equation
291,228.21 : 401,801.11 = 163,879.20 : x - Step 2: Convert to fraction form
291,228.21/401,801.11 = 163,879.20/x - Step 3: Cross multiply
291,228.21x = 401,801.11 × 163,879.20 - Step 4: Simplify right side
291,228.21x = 65,846,844,056.21 - Step 5: Solve for x
x = 65,846,844,056.21/291,228.21 - Step 6: Final answer
x = 226,100.50
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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.