Finding the Fourth Proportional to 391,861.84, 540,775.28 and 219,817.96
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Solution
The fourth proportional to 391,861.84, 540,775.28 and 219,817.96 is: 303,352.12
Step by Step Solution
- Step 1: Write the proportion equation
391,861.84 : 540,775.28 = 219,817.96 : x - Step 2: Convert to fraction form
391,861.84/540,775.28 = 219,817.96/x - Step 3: Cross multiply
391,861.84x = 540,775.28 × 219,817.96 - Step 4: Simplify right side
391,861.84x = 118,872,118,868.03 - Step 5: Solve for x
x = 118,872,118,868.03/391,861.84 - Step 6: Final answer
x = 303,352.12
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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.