Finding the Fourth Proportional to 385,367.70, 578,051.55 and 338,711.70
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Solution
The fourth proportional to 385,367.70, 578,051.55 and 338,711.70 is: 508,067.55
Step by Step Solution
- Step 1: Write the proportion equation
385,367.70 : 578,051.55 = 338,711.70 : x - Step 2: Convert to fraction form
385,367.70/578,051.55 = 338,711.70/x - Step 3: Cross multiply
385,367.70x = 578,051.55 × 338,711.70 - Step 4: Simplify right side
385,367.70x = 195,792,823,188.14 - Step 5: Solve for x
x = 195,792,823,188.14/385,367.70 - Step 6: Final answer
x = 508,067.55
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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.