Finding the Fourth Proportional to 309,964.43, 427,765.12 and 172,143.99
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Solution
The fourth proportional to 309,964.43, 427,765.12 and 172,143.99 is: 237,566.60
Step by Step Solution
- Step 1: Write the proportion equation
309,964.43 : 427,765.12 = 172,143.99 : x - Step 2: Convert to fraction form
309,964.43/427,765.12 = 172,143.99/x - Step 3: Cross multiply
309,964.43x = 427,765.12 × 172,143.99 - Step 4: Simplify right side
309,964.43x = 73,637,194,539.63 - Step 5: Solve for x
x = 73,637,194,539.63/309,964.43 - Step 6: Final answer
x = 237,566.60
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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.