Finding the Fourth Proportional to 279,115.05, 391,285.95 and 279,115.05
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Solution
The fourth proportional to 279,115.05, 391,285.95 and 279,115.05 is: 391,285.95
Step by Step Solution
- Step 1: Write the proportion equation
279,115.05 : 391,285.95 = 279,115.05 : x - Step 2: Convert to fraction form
279,115.05/391,285.95 = 279,115.05/x - Step 3: Cross multiply
279,115.05x = 391,285.95 × 279,115.05 - Step 4: Simplify right side
279,115.05x = 109,213,797,498.55 - Step 5: Solve for x
x = 109,213,797,498.55/279,115.05 - Step 6: Final answer
x = 391,285.95
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.