Finding the Fourth Proportional to 208,779.84, 287,995.68 and 133,243.20
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Solution
The fourth proportional to 208,779.84, 287,995.68 and 133,243.20 is: 183,798.71
Step by Step Solution
- Step 1: Write the proportion equation
208,779.84 : 287,995.68 = 133,243.20 : x - Step 2: Convert to fraction form
208,779.84/287,995.68 = 133,243.20/x - Step 3: Cross multiply
208,779.84x = 287,995.68 × 133,243.20 - Step 4: Simplify right side
208,779.84x = 38,373,465,989.38 - Step 5: Solve for x
x = 38,373,465,989.38/208,779.84 - Step 6: Final answer
x = 183,798.71
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.