Finding the Fourth Proportional to 257,944.97, 355,946.70 and 143,217.68
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Solution
The fourth proportional to 257,944.97, 355,946.70 and 143,217.68 is: 197,630.76
Step by Step Solution
- Step 1: Write the proportion equation
257,944.97 : 355,946.70 = 143,217.68 : x - Step 2: Convert to fraction form
257,944.97/355,946.70 = 143,217.68/x - Step 3: Cross multiply
257,944.97x = 355,946.70 × 143,217.68 - Step 4: Simplify right side
257,944.97x = 50,977,860,577.66 - Step 5: Solve for x
x = 50,977,860,577.66/257,944.97 - Step 6: Final answer
x = 197,630.76
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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.