Finding the Fourth Proportional to 391,202.22, 586,805.76 and 138,427.68
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Solution
The fourth proportional to 391,202.22, 586,805.76 and 138,427.68 is: 207,642.38
Step by Step Solution
- Step 1: Write the proportion equation
391,202.22 : 586,805.76 = 138,427.68 : x - Step 2: Convert to fraction form
391,202.22/586,805.76 = 138,427.68/x - Step 3: Cross multiply
391,202.22x = 586,805.76 × 138,427.68 - Step 4: Simplify right side
391,202.22x = 81,230,159,967.44 - Step 5: Solve for x
x = 81,230,159,967.44/391,202.22 - Step 6: Final answer
x = 207,642.38
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.