Finding the Fourth Proportional to 207,279.76, 310,886.70 and 74,135.20
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Solution
The fourth proportional to 207,279.76, 310,886.70 and 74,135.20 is: 111,191.02
Step by Step Solution
- Step 1: Write the proportion equation
207,279.76 : 310,886.70 = 74,135.20 : x - Step 2: Convert to fraction form
207,279.76/310,886.70 = 74,135.20/x - Step 3: Cross multiply
207,279.76x = 310,886.70 × 74,135.20 - Step 4: Simplify right side
207,279.76x = 23,047,647,681.84 - Step 5: Solve for x
x = 23,047,647,681.84/207,279.76 - Step 6: Final answer
x = 111,191.02
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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.