Finding the Fourth Proportional to 420,125.10, 579,770.12 and 238,837.12
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Solution
The fourth proportional to 420,125.10, 579,770.12 and 238,837.12 is: 329,593.79
Step by Step Solution
- Step 1: Write the proportion equation
420,125.10 : 579,770.12 = 238,837.12 : x - Step 2: Convert to fraction form
420,125.10/579,770.12 = 238,837.12/x - Step 3: Cross multiply
420,125.10x = 579,770.12 × 238,837.12 - Step 4: Simplify right side
420,125.10x = 138,470,625,722.85 - Step 5: Solve for x
x = 138,470,625,722.85/420,125.10 - Step 6: Final answer
x = 329,593.79
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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.