Finding the Fourth Proportional to 286,913.89, 430,394.93 and 87,236.00
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Solution
The fourth proportional to 286,913.89, 430,394.93 and 87,236.00 is: 130,861.33
Step by Step Solution
- Step 1: Write the proportion equation
286,913.89 : 430,394.93 = 87,236.00 : x - Step 2: Convert to fraction form
286,913.89/430,394.93 = 87,236.00/x - Step 3: Cross multiply
286,913.89x = 430,394.93 × 87,236.00 - Step 4: Simplify right side
286,913.89x = 37,545,933,887.41 - Step 5: Solve for x
x = 37,545,933,887.41/286,913.89 - Step 6: Final answer
x = 130,861.33
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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.