Finding the Fourth Proportional to 257,853.14, 355,819.49 and 143,122.76
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Solution
The fourth proportional to 257,853.14, 355,819.49 and 143,122.76 is: 197,499.50
Step by Step Solution
- Step 1: Write the proportion equation
257,853.14 : 355,819.49 = 143,122.76 : x - Step 2: Convert to fraction form
257,853.14/355,819.49 = 143,122.76/x - Step 3: Cross multiply
257,853.14x = 355,819.49 × 143,122.76 - Step 4: Simplify right side
257,853.14x = 50,925,864,975.88 - Step 5: Solve for x
x = 50,925,864,975.88/257,853.14 - Step 6: Final answer
x = 197,499.50
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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.