Finding the Fourth Proportional to 388,538.68, 536,263.14 and 245,202.52
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Solution
The fourth proportional to 388,538.68, 536,263.14 and 245,202.52 is: 338,429.81
Step by Step Solution
- Step 1: Write the proportion equation
388,538.68 : 536,263.14 = 245,202.52 : x - Step 2: Convert to fraction form
388,538.68/536,263.14 = 245,202.52/x - Step 3: Cross multiply
388,538.68x = 536,263.14 × 245,202.52 - Step 4: Simplify right side
388,538.68x = 131,493,073,311.11 - Step 5: Solve for x
x = 131,493,073,311.11/388,538.68 - Step 6: Final answer
x = 338,429.81
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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.