Finding the Fourth Proportional to 286,334.19, 428,847.21 and 136,679.81
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Solution
The fourth proportional to 286,334.19, 428,847.21 and 136,679.81 is: 204,707.49
Step by Step Solution
- Step 1: Write the proportion equation
286,334.19 : 428,847.21 = 136,679.81 : x - Step 2: Convert to fraction form
286,334.19/428,847.21 = 136,679.81/x - Step 3: Cross multiply
286,334.19x = 428,847.21 × 136,679.81 - Step 4: Simplify right side
286,334.19x = 58,614,753,037.59 - Step 5: Solve for x
x = 58,614,753,037.59/286,334.19 - Step 6: Final answer
x = 204,707.49
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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.