Finding the Fourth Proportional to 388,539.20, 536,226.72 and 245,291.84
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Solution
The fourth proportional to 388,539.20, 536,226.72 and 245,291.84 is: 338,529.65
Step by Step Solution
- Step 1: Write the proportion equation
388,539.20 : 536,226.72 = 245,291.84 : x - Step 2: Convert to fraction form
388,539.20/536,226.72 = 245,291.84/x - Step 3: Cross multiply
388,539.20x = 536,226.72 × 245,291.84 - Step 4: Simplify right side
388,539.20x = 131,532,038,805.97 - Step 5: Solve for x
x = 131,532,038,805.97/388,539.20 - Step 6: Final answer
x = 338,529.65
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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.