Finding the Fourth Proportional to 388,562.15, 536,243.21 and 216,491.42
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Solution
The fourth proportional to 388,562.15, 536,243.21 and 216,491.42 is: 298,773.45
Step by Step Solution
- Step 1: Write the proportion equation
388,562.15 : 536,243.21 = 216,491.42 : x - Step 2: Convert to fraction form
388,562.15/536,243.21 = 216,491.42/x - Step 3: Cross multiply
388,562.15x = 536,243.21 × 216,491.42 - Step 4: Simplify right side
388,562.15x = 116,092,053,998.26 - Step 5: Solve for x
x = 116,092,053,998.26/388,562.15 - Step 6: Final answer
x = 298,773.45
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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.