Finding the Fourth Proportional to 287,983.40, 397,417.26 and 160,658.99
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Solution
The fourth proportional to 287,983.40, 397,417.26 and 160,658.99 is: 221,709.50
Step by Step Solution
- Step 1: Write the proportion equation
287,983.40 : 397,417.26 = 160,658.99 : x - Step 2: Convert to fraction form
287,983.40/397,417.26 = 160,658.99/x - Step 3: Cross multiply
287,983.40x = 397,417.26 × 160,658.99 - Step 4: Simplify right side
287,983.40x = 63,848,655,600.17 - Step 5: Solve for x
x = 63,848,655,600.17/287,983.40 - Step 6: Final answer
x = 221,709.50
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1.5x scale
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.