Finding the Fourth Proportional to 257,806.64, 355,767.81 and 143,078.62
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Solution
The fourth proportional to 257,806.64, 355,767.81 and 143,078.62 is: 197,445.52
Step by Step Solution
- Step 1: Write the proportion equation
257,806.64 : 355,767.81 = 143,078.62 : x - Step 2: Convert to fraction form
257,806.64/355,767.81 = 143,078.62/x - Step 3: Cross multiply
257,806.64x = 355,767.81 × 143,078.62 - Step 4: Simplify right side
257,806.64x = 50,902,767,295.22 - Step 5: Solve for x
x = 50,902,767,295.22/257,806.64 - Step 6: Final answer
x = 197,445.52
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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.