Finding the Fourth Proportional to 213,652.64, 294,877.64 and 128,769.80
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Solution
The fourth proportional to 213,652.64, 294,877.64 and 128,769.80 is: 177,724.62
Step by Step Solution
- Step 1: Write the proportion equation
213,652.64 : 294,877.64 = 128,769.80 : x - Step 2: Convert to fraction form
213,652.64/294,877.64 = 128,769.80/x - Step 3: Cross multiply
213,652.64x = 294,877.64 × 128,769.80 - Step 4: Simplify right side
213,652.64x = 37,971,334,727.27 - Step 5: Solve for x
x = 37,971,334,727.27/213,652.64 - Step 6: Final answer
x = 177,724.62
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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.