Finding the Fourth Proportional to 383,431.80, 575,147.70 and 217,543.80
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Solution
The fourth proportional to 383,431.80, 575,147.70 and 217,543.80 is: 326,315.70
Step by Step Solution
- Step 1: Write the proportion equation
383,431.80 : 575,147.70 = 217,543.80 : x - Step 2: Convert to fraction form
383,431.80/575,147.70 = 217,543.80/x - Step 3: Cross multiply
383,431.80x = 575,147.70 × 217,543.80 - Step 4: Simplify right side
383,431.80x = 125,119,816,219.26 - Step 5: Solve for x
x = 125,119,816,219.26/383,431.80 - Step 6: Final answer
x = 326,315.70
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1.5x scale
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.