Finding the Fourth Proportional to 208,646.83, 312,868.18 and 145,497.20
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Solution
The fourth proportional to 208,646.83, 312,868.18 and 145,497.20 is: 218,174.63
Step by Step Solution
- Step 1: Write the proportion equation
208,646.83 : 312,868.18 = 145,497.20 : x - Step 2: Convert to fraction form
208,646.83/312,868.18 = 145,497.20/x - Step 3: Cross multiply
208,646.83x = 312,868.18 × 145,497.20 - Step 4: Simplify right side
208,646.83x = 45,521,444,577.52 - Step 5: Solve for x
x = 45,521,444,577.52/208,646.83 - Step 6: Final answer
x = 218,174.63
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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.