Finding the Fourth Proportional to 287,191.51, 396,368.85 and 172,533.99
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Solution
The fourth proportional to 287,191.51, 396,368.85 and 172,533.99 is: 238,123.68
Step by Step Solution
- Step 1: Write the proportion equation
287,191.51 : 396,368.85 = 172,533.99 : x - Step 2: Convert to fraction form
287,191.51/396,368.85 = 172,533.99/x - Step 3: Cross multiply
287,191.51x = 396,368.85 × 172,533.99 - Step 4: Simplify right side
287,191.51x = 68,387,099,202.21 - Step 5: Solve for x
x = 68,387,099,202.21/287,191.51 - Step 6: Final answer
x = 238,123.68
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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.