Finding the Fourth Proportional to 515,232.80, 771,812.40 and 347,271.20
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Solution
The fourth proportional to 515,232.80, 771,812.40 and 347,271.20 is: 520,207.99
Step by Step Solution
- Step 1: Write the proportion equation
515,232.80 : 771,812.40 = 347,271.20 : x - Step 2: Convert to fraction form
515,232.80/771,812.40 = 347,271.20/x - Step 3: Cross multiply
515,232.80x = 771,812.40 × 347,271.20 - Step 4: Simplify right side
515,232.80x = 268,028,218,322.88 - Step 5: Solve for x
x = 268,028,218,322.88/515,232.80 - Step 6: Final answer
x = 520,207.99
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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.