Finding the Fourth Proportional to 393,353.21, 542,304.78 and 257,152.98
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Solution
The fourth proportional to 393,353.21, 542,304.78 and 257,152.98 is: 354,529.44
Step by Step Solution
- Step 1: Write the proportion equation
393,353.21 : 542,304.78 = 257,152.98 : x - Step 2: Convert to fraction form
393,353.21/542,304.78 = 257,152.98/x - Step 3: Cross multiply
393,353.21x = 542,304.78 × 257,152.98 - Step 4: Simplify right side
393,353.21x = 139,455,290,245.24 - Step 5: Solve for x
x = 139,455,290,245.24/393,353.21 - Step 6: Final answer
x = 354,529.44
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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.