Finding the Fourth Proportional to 210,655.80, 315,980.62 and 68,507.62
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Solution
The fourth proportional to 210,655.80, 315,980.62 and 68,507.62 is: 102,760.43
Step by Step Solution
- Step 1: Write the proportion equation
210,655.80 : 315,980.62 = 68,507.62 : x - Step 2: Convert to fraction form
210,655.80/315,980.62 = 68,507.62/x - Step 3: Cross multiply
210,655.80x = 315,980.62 × 68,507.62 - Step 4: Simplify right side
210,655.80x = 21,647,080,242.32 - Step 5: Solve for x
x = 21,647,080,242.32/210,655.80 - Step 6: Final answer
x = 102,760.43
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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.