Finding the Fourth Proportional to 287,503.76, 396,743.64 and 160,176.08
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Solution
The fourth proportional to 287,503.76, 396,743.64 and 160,176.08 is: 221,036.56
Step by Step Solution
- Step 1: Write the proportion equation
287,503.76 : 396,743.64 = 160,176.08 : x - Step 2: Convert to fraction form
287,503.76/396,743.64 = 160,176.08/x - Step 3: Cross multiply
287,503.76x = 396,743.64 × 160,176.08 - Step 4: Simplify right side
287,503.76x = 63,548,841,020.13 - Step 5: Solve for x
x = 63,548,841,020.13/287,503.76 - Step 6: Final answer
x = 221,036.56
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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.