Finding the Fourth Proportional to 259,707.60, 389,512.08 and 91,188.18
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Solution
The fourth proportional to 259,707.60, 389,512.08 and 91,188.18 is: 136,764.95
Step by Step Solution
- Step 1: Write the proportion equation
259,707.60 : 389,512.08 = 91,188.18 : x - Step 2: Convert to fraction form
259,707.60/389,512.08 = 91,188.18/x - Step 3: Cross multiply
259,707.60x = 389,512.08 × 91,188.18 - Step 4: Simplify right side
259,707.60x = 35,518,897,663.21 - Step 5: Solve for x
x = 35,518,897,663.21/259,707.60 - Step 6: Final answer
x = 136,764.95
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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.