Finding the Fourth Proportional to 306,135.48, 422,448.30 and 172,008.12
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Solution
The fourth proportional to 306,135.48, 422,448.30 and 172,008.12 is: 237,360.72
Step by Step Solution
- Step 1: Write the proportion equation
306,135.48 : 422,448.30 = 172,008.12 : x - Step 2: Convert to fraction form
306,135.48/422,448.30 = 172,008.12/x - Step 3: Cross multiply
306,135.48x = 422,448.30 × 172,008.12 - Step 4: Simplify right side
306,135.48x = 72,664,537,880.20 - Step 5: Solve for x
x = 72,664,537,880.20/306,135.48 - Step 6: Final answer
x = 237,360.72
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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.