Finding the Fourth Proportional to 286,430.40, 428,991.12 and 136,775.52
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Solution
The fourth proportional to 286,430.40, 428,991.12 and 136,775.52 is: 204,850.75
Step by Step Solution
- Step 1: Write the proportion equation
286,430.40 : 428,991.12 = 136,775.52 : x - Step 2: Convert to fraction form
286,430.40/428,991.12 = 136,775.52/x - Step 3: Cross multiply
286,430.40x = 428,991.12 × 136,775.52 - Step 4: Simplify right side
286,430.40x = 58,675,483,513.38 - Step 5: Solve for x
x = 58,675,483,513.38/286,430.40 - Step 6: Final answer
x = 204,850.75
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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.