Finding the Fourth Proportional to 420,083.91, 579,692.75 and 238,770.68
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Solution
The fourth proportional to 420,083.91, 579,692.75 and 238,770.68 is: 329,490.43
Step by Step Solution
- Step 1: Write the proportion equation
420,083.91 : 579,692.75 = 238,770.68 : x - Step 2: Convert to fraction form
420,083.91/579,692.75 = 238,770.68/x - Step 3: Cross multiply
420,083.91x = 579,692.75 × 238,770.68 - Step 4: Simplify right side
420,083.91x = 138,413,628,016.25 - Step 5: Solve for x
x = 138,413,628,016.25/420,083.91 - Step 6: Final answer
x = 329,490.43
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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.