Finding the Fourth Proportional to 393,067.80, 542,455.83 and 297,408.42
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Solution
The fourth proportional to 393,067.80, 542,455.83 and 297,408.42 is: 410,440.47
Step by Step Solution
- Step 1: Write the proportion equation
393,067.80 : 542,455.83 = 297,408.42 : x - Step 2: Convert to fraction form
393,067.80/542,455.83 = 297,408.42/x - Step 3: Cross multiply
393,067.80x = 542,455.83 × 297,408.42 - Step 4: Simplify right side
393,067.80x = 161,330,931,320.09 - Step 5: Solve for x
x = 161,330,931,320.09/393,067.80 - Step 6: Final answer
x = 410,440.47
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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.