Finding the Fourth Proportional to 320,239.64, 479,989.63 and 120,432.49
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Solution
The fourth proportional to 320,239.64, 479,989.63 and 120,432.49 is: 180,509.65
Step by Step Solution
- Step 1: Write the proportion equation
320,239.64 : 479,989.63 = 120,432.49 : x - Step 2: Convert to fraction form
320,239.64/479,989.63 = 120,432.49/x - Step 3: Cross multiply
320,239.64x = 479,989.63 × 120,432.49 - Step 4: Simplify right side
320,239.64x = 57,806,345,265.65 - Step 5: Solve for x
x = 57,806,345,265.65/320,239.64 - Step 6: Final answer
x = 180,509.65
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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.