Finding the Fourth Proportional to 287,668.75, 431,503.43 and 155,390.08
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Solution
The fourth proportional to 287,668.75, 431,503.43 and 155,390.08 is: 233,085.28
Step by Step Solution
- Step 1: Write the proportion equation
287,668.75 : 431,503.43 = 155,390.08 : x - Step 2: Convert to fraction form
287,668.75/431,503.43 = 155,390.08/x - Step 3: Cross multiply
287,668.75x = 431,503.43 × 155,390.08 - Step 4: Simplify right side
287,668.75x = 67,051,350,652.27 - Step 5: Solve for x
x = 67,051,350,652.27/287,668.75 - Step 6: Final answer
x = 233,085.28
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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.