Finding the Fourth Proportional to 385,462.63, 578,390.94 and 257,466.21
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Solution
The fourth proportional to 385,462.63, 578,390.94 and 257,466.21 is: 386,330.90
Step by Step Solution
- Step 1: Write the proportion equation
385,462.63 : 578,390.94 = 257,466.21 : x - Step 2: Convert to fraction form
385,462.63/578,390.94 = 257,466.21/x - Step 3: Cross multiply
385,462.63x = 578,390.94 × 257,466.21 - Step 4: Simplify right side
385,462.63x = 148,916,123,220.14 - Step 5: Solve for x
x = 148,916,123,220.14/385,462.63 - Step 6: Final answer
x = 386,330.90
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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.