Finding the Fourth Proportional to 286,770.71, 430,128.12 and 87,092.75
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Solution
The fourth proportional to 286,770.71, 430,128.12 and 87,092.75 is: 130,630.64
Step by Step Solution
- Step 1: Write the proportion equation
286,770.71 : 430,128.12 = 87,092.75 : x - Step 2: Convert to fraction form
286,770.71/430,128.12 = 87,092.75/x - Step 3: Cross multiply
286,770.71x = 430,128.12 × 87,092.75 - Step 4: Simplify right side
286,770.71x = 37,461,042,225.05 - Step 5: Solve for x
x = 37,461,042,225.05/286,770.71 - Step 6: Final answer
x = 130,630.64
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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.