Finding the Fourth Proportional to 393,228.06, 542,649.52 and 221,145.99
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Solution
The fourth proportional to 393,228.06, 542,649.52 and 221,145.99 is: 305,178.54
Step by Step Solution
- Step 1: Write the proportion equation
393,228.06 : 542,649.52 = 221,145.99 : x - Step 2: Convert to fraction form
393,228.06/542,649.52 = 221,145.99/x - Step 3: Cross multiply
393,228.06x = 542,649.52 × 221,145.99 - Step 4: Simplify right side
393,228.06x = 120,004,765,323.43 - Step 5: Solve for x
x = 120,004,765,323.43/393,228.06 - Step 6: Final answer
x = 305,178.54
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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.