Finding the Fourth Proportional to 324,908.80, 487,363.20 and 320,243.20
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Solution
The fourth proportional to 324,908.80, 487,363.20 and 320,243.20 is: 480,364.80
Step by Step Solution
- Step 1: Write the proportion equation
324,908.80 : 487,363.20 = 320,243.20 : x - Step 2: Convert to fraction form
324,908.80/487,363.20 = 320,243.20/x - Step 3: Cross multiply
324,908.80x = 487,363.20 × 320,243.20 - Step 4: Simplify right side
324,908.80x = 156,074,750,730.24 - Step 5: Solve for x
x = 156,074,750,730.24/324,908.80 - Step 6: Final answer
x = 480,364.80
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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.