Finding the Fourth Proportional to 236,420.81, 326,261.77 and 128,993.09
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Solution
The fourth proportional to 236,420.81, 326,261.77 and 128,993.09 is: 178,011.04
Step by Step Solution
- Step 1: Write the proportion equation
236,420.81 : 326,261.77 = 128,993.09 : x - Step 2: Convert to fraction form
236,420.81/326,261.77 = 128,993.09/x - Step 3: Cross multiply
236,420.81x = 326,261.77 × 128,993.09 - Step 4: Simplify right side
236,420.81x = 42,085,514,468.19 - Step 5: Solve for x
x = 42,085,514,468.19/236,420.81 - Step 6: Final answer
x = 178,011.04
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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.