Finding the Fourth Proportional to 385,178.11, 531,618.76 and 258,074.53
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Solution
The fourth proportional to 385,178.11, 531,618.76 and 258,074.53 is: 356,191.74
Step by Step Solution
- Step 1: Write the proportion equation
385,178.11 : 531,618.76 = 258,074.53 : x - Step 2: Convert to fraction form
385,178.11/531,618.76 = 258,074.53/x - Step 3: Cross multiply
385,178.11x = 531,618.76 × 258,074.53 - Step 4: Simplify right side
385,178.11x = 137,197,260,619.73 - Step 5: Solve for x
x = 137,197,260,619.73/385,178.11 - Step 6: Final answer
x = 356,191.74
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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.