Finding the Fourth Proportional to 305,044.79, 420,987.03 and 169,121.38
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Solution
The fourth proportional to 305,044.79, 420,987.03 and 169,121.38 is: 233,401.48
Step by Step Solution
- Step 1: Write the proportion equation
305,044.79 : 420,987.03 = 169,121.38 : x - Step 2: Convert to fraction form
305,044.79/420,987.03 = 169,121.38/x - Step 3: Cross multiply
305,044.79x = 420,987.03 × 169,121.38 - Step 4: Simplify right side
305,044.79x = 71,197,906,423.23 - Step 5: Solve for x
x = 71,197,906,423.23/305,044.79 - Step 6: Final answer
x = 233,401.48
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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.