Finding the Fourth Proportional to 286,203.80, 429,378.18 and 202,128.20
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Solution
The fourth proportional to 286,203.80, 429,378.18 and 202,128.20 is: 303,243.49
Step by Step Solution
- Step 1: Write the proportion equation
286,203.80 : 429,378.18 = 202,128.20 : x - Step 2: Convert to fraction form
286,203.80/429,378.18 = 202,128.20/x - Step 3: Cross multiply
286,203.80x = 429,378.18 × 202,128.20 - Step 4: Simplify right side
286,203.80x = 86,789,438,642.68 - Step 5: Solve for x
x = 86,789,438,642.68/286,203.80 - Step 6: Final answer
x = 303,243.49
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.