Finding the Fourth Proportional to 256,515.24, 353,990.16 and 143,337.99
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Solution
The fourth proportional to 256,515.24, 353,990.16 and 143,337.99 is: 197,805.94
Step by Step Solution
- Step 1: Write the proportion equation
256,515.24 : 353,990.16 = 143,337.99 : x - Step 2: Convert to fraction form
256,515.24/353,990.16 = 143,337.99/x - Step 3: Cross multiply
256,515.24x = 353,990.16 × 143,337.99 - Step 4: Simplify right side
256,515.24x = 50,740,238,014.18 - Step 5: Solve for x
x = 50,740,238,014.18/256,515.24 - Step 6: Final answer
x = 197,805.94
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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.