Finding the Fourth Proportional to 287,590.96, 396,905.18 and 172,907.08
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Solution
The fourth proportional to 287,590.96, 396,905.18 and 172,907.08 is: 238,629.60
Step by Step Solution
- Step 1: Write the proportion equation
287,590.96 : 396,905.18 = 172,907.08 : x - Step 2: Convert to fraction form
287,590.96/396,905.18 = 172,907.08/x - Step 3: Cross multiply
287,590.96x = 396,905.18 × 172,907.08 - Step 4: Simplify right side
287,590.96x = 68,627,715,710.67 - Step 5: Solve for x
x = 68,627,715,710.67/287,590.96 - Step 6: Final answer
x = 238,629.60
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1.5x scale
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.