Finding the Fourth Proportional to 256,431.40, 353,673.56 and 239,242.84
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Solution
The fourth proportional to 256,431.40, 353,673.56 and 239,242.84 is: 329,966.87
Step by Step Solution
- Step 1: Write the proportion equation
256,431.40 : 353,673.56 = 239,242.84 : x - Step 2: Convert to fraction form
256,431.40/353,673.56 = 239,242.84/x - Step 3: Cross multiply
256,431.40x = 353,673.56 × 239,242.84 - Step 4: Simplify right side
256,431.40x = 84,613,866,927.31 - Step 5: Solve for x
x = 84,613,866,927.31/256,431.40 - Step 6: Final answer
x = 329,966.87
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.