Finding the Fourth Proportional to 257,841.11, 355,815.15 and 143,113.02
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Solution
The fourth proportional to 257,841.11, 355,815.15 and 143,113.02 is: 197,492.87
Step by Step Solution
- Step 1: Write the proportion equation
257,841.11 : 355,815.15 = 143,113.02 : x - Step 2: Convert to fraction form
257,841.11/355,815.15 = 143,113.02/x - Step 3: Cross multiply
257,841.11x = 355,815.15 × 143,113.02 - Step 4: Simplify right side
257,841.11x = 50,921,780,678.25 - Step 5: Solve for x
x = 50,921,780,678.25/257,841.11 - Step 6: Final answer
x = 197,492.87
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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.