Finding the Fourth Proportional to 256,509.36, 353,987.10 and 149,040.18
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Solution
The fourth proportional to 256,509.36, 353,987.10 and 149,040.18 is: 205,677.88
Step by Step Solution
- Step 1: Write the proportion equation
256,509.36 : 353,987.10 = 149,040.18 : x - Step 2: Convert to fraction form
256,509.36/353,987.10 = 149,040.18/x - Step 3: Cross multiply
256,509.36x = 353,987.10 × 149,040.18 - Step 4: Simplify right side
256,509.36x = 52,758,301,101.68 - Step 5: Solve for x
x = 52,758,301,101.68/256,509.36 - Step 6: Final answer
x = 205,677.88
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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.