Finding the Fourth Proportional to 230,221.80, 317,701.28 and 128,247.12
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Solution
The fourth proportional to 230,221.80, 317,701.28 and 128,247.12 is: 176,978.35
Step by Step Solution
- Step 1: Write the proportion equation
230,221.80 : 317,701.28 = 128,247.12 : x - Step 2: Convert to fraction form
230,221.80/317,701.28 = 128,247.12/x - Step 3: Cross multiply
230,221.80x = 317,701.28 × 128,247.12 - Step 4: Simplify right side
230,221.80x = 40,744,274,180.31 - Step 5: Solve for x
x = 40,744,274,180.31/230,221.80 - Step 6: Final answer
x = 176,978.35
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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.