Finding the Fourth Proportional to 230,235.80, 317,720.61 and 128,261.12
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Solution
The fourth proportional to 230,235.80, 317,720.61 and 128,261.12 is: 176,997.67
Step by Step Solution
- Step 1: Write the proportion equation
230,235.80 : 317,720.61 = 128,261.12 : x - Step 2: Convert to fraction form
230,235.80/317,720.61 = 128,261.12/x - Step 3: Cross multiply
230,235.80x = 317,720.61 × 128,261.12 - Step 4: Simplify right side
230,235.80x = 40,751,199,697.08 - Step 5: Solve for x
x = 40,751,199,697.08/230,235.80 - Step 6: Final answer
x = 176,997.67
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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.