Finding the Fourth Proportional to 257,911.53, 355,901.94 and 143,183.49
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Solution
The fourth proportional to 257,911.53, 355,901.94 and 143,183.49 is: 197,584.35
Step by Step Solution
- Step 1: Write the proportion equation
257,911.53 : 355,901.94 = 143,183.49 : x - Step 2: Convert to fraction form
257,911.53/355,901.94 = 143,183.49/x - Step 3: Cross multiply
257,911.53x = 355,901.94 × 143,183.49 - Step 4: Simplify right side
257,911.53x = 50,959,281,866.97 - Step 5: Solve for x
x = 50,959,281,866.97/257,911.53 - Step 6: Final answer
x = 197,584.35
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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.