Finding the Fourth Proportional to 420,702.99, 580,567.81 and 229,715.03
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Solution
The fourth proportional to 420,702.99, 580,567.81 and 229,715.03 is: 317,005.48
Step by Step Solution
- Step 1: Write the proportion equation
420,702.99 : 580,567.81 = 229,715.03 : x - Step 2: Convert to fraction form
420,702.99/580,567.81 = 229,715.03/x - Step 3: Cross multiply
420,702.99x = 580,567.81 × 229,715.03 - Step 4: Simplify right side
420,702.99x = 133,365,151,891.18 - Step 5: Solve for x
x = 133,365,151,891.18/420,702.99 - Step 6: Final answer
x = 317,005.48
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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.