Finding the Fourth Proportional to 287,385,392.80, 431,350,621.80 and 177,879,317.68
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Solution
The fourth proportional to 287,385,392.80, 431,350,621.80 and 177,879,317.68 is: 266,987,662.59
Step by Step Solution
- Step 1: Write the proportion equation
287,385,392.80 : 431,350,621.80 = 177,879,317.68 : x - Step 2: Convert to fraction form
287,385,392.80/431,350,621.80 = 177,879,317.68/x - Step 3: Cross multiply
287,385,392.80x = 431,350,621.80 × 177,879,317.68 - Step 4: Simplify right side
287,385,392.80x = 76,728,354,286,627,744 - Step 5: Solve for x
x = 76,728,354,286,627,744/287,385,392.80 - Step 6: Final answer
x = 266,987,662.59
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.