Finding the Fourth Proportional to 348,729.20, 522,964.20 and 138,323.60
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Solution
The fourth proportional to 348,729.20, 522,964.20 and 138,323.60 is: 207,433.99
Step by Step Solution
- Step 1: Write the proportion equation
348,729.20 : 522,964.20 = 138,323.60 : x - Step 2: Convert to fraction form
348,729.20/522,964.20 = 138,323.60/x - Step 3: Cross multiply
348,729.20x = 522,964.20 × 138,323.60 - Step 4: Simplify right side
348,729.20x = 72,338,290,815.12 - Step 5: Solve for x
x = 72,338,290,815.12/348,729.20 - Step 6: Final answer
x = 207,433.99
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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.