Finding the Fourth Proportional to 287,125.28, 430,655.11 and 76,779.62
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Solution
The fourth proportional to 287,125.28, 430,655.11 and 76,779.62 is: 115,160.66
Step by Step Solution
- Step 1: Write the proportion equation
287,125.28 : 430,655.11 = 76,779.62 : x - Step 2: Convert to fraction form
287,125.28/430,655.11 = 76,779.62/x - Step 3: Cross multiply
287,125.28x = 430,655.11 × 76,779.62 - Step 4: Simplify right side
287,125.28x = 33,065,535,696.86 - Step 5: Solve for x
x = 33,065,535,696.86/287,125.28 - Step 6: Final answer
x = 115,160.66
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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.