Finding the Fourth Proportional to 391,137.93, 539,677.83 and 221,372.06
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Solution
The fourth proportional to 391,137.93, 539,677.83 and 221,372.06 is: 305,441.08
Step by Step Solution
- Step 1: Write the proportion equation
391,137.93 : 539,677.83 = 221,372.06 : x - Step 2: Convert to fraction form
391,137.93/539,677.83 = 221,372.06/x - Step 3: Cross multiply
391,137.93x = 539,677.83 × 221,372.06 - Step 4: Simplify right side
391,137.93x = 119,469,590,265.04 - Step 5: Solve for x
x = 119,469,590,265.04/391,137.93 - Step 6: Final answer
x = 305,441.08
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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.