Finding the Fourth Proportional to 320,243.09, 479,989.43 and 130,585.09
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Solution
The fourth proportional to 320,243.09, 479,989.43 and 130,585.09 is: 195,724.63
Step by Step Solution
- Step 1: Write the proportion equation
320,243.09 : 479,989.43 = 130,585.09 : x - Step 2: Convert to fraction form
320,243.09/479,989.43 = 130,585.09/x - Step 3: Cross multiply
320,243.09x = 479,989.43 × 130,585.09 - Step 4: Simplify right side
320,243.09x = 62,679,461,653.31 - Step 5: Solve for x
x = 62,679,461,653.31/320,243.09 - Step 6: Final answer
x = 195,724.63
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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.