Finding the Fourth Proportional to 207,288.38, 310,735.74 and 81,009.63
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Solution
The fourth proportional to 207,288.38, 310,735.74 and 81,009.63 is: 121,437.52
Step by Step Solution
- Step 1: Write the proportion equation
207,288.38 : 310,735.74 = 81,009.63 : x - Step 2: Convert to fraction form
207,288.38/310,735.74 = 81,009.63/x - Step 3: Cross multiply
207,288.38x = 310,735.74 × 81,009.63 - Step 4: Simplify right side
207,288.38x = 25,172,587,325.18 - Step 5: Solve for x
x = 25,172,587,325.18/207,288.38 - Step 6: Final answer
x = 121,437.52
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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.