Finding the Fourth Proportional to 207,319.23, 310,781.81 and 81,040.43
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Solution
The fourth proportional to 207,319.23, 310,781.81 and 81,040.43 is: 121,483.63
Step by Step Solution
- Step 1: Write the proportion equation
207,319.23 : 310,781.81 = 81,040.43 : x - Step 2: Convert to fraction form
207,319.23/310,781.81 = 81,040.43/x - Step 3: Cross multiply
207,319.23x = 310,781.81 × 81,040.43 - Step 4: Simplify right side
207,319.23x = 25,185,892,498.13 - Step 5: Solve for x
x = 25,185,892,498.13/207,319.23 - Step 6: Final answer
x = 121,483.63
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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.