Finding the Fourth Proportional to 288,831.44, 433,241.76 and 86,427.66
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Solution
The fourth proportional to 288,831.44, 433,241.76 and 86,427.66 is: 129,639.88
Step by Step Solution
- Step 1: Write the proportion equation
288,831.44 : 433,241.76 = 86,427.66 : x - Step 2: Convert to fraction form
288,831.44/433,241.76 = 86,427.66/x - Step 3: Cross multiply
288,831.44x = 433,241.76 × 86,427.66 - Step 4: Simplify right side
288,831.44x = 37,444,071,531.08 - Step 5: Solve for x
x = 37,444,071,531.08/288,831.44 - Step 6: Final answer
x = 129,639.88
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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.