Finding the Fourth Proportional to 205,373.18, 307,358.84 and 172,130.78
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Solution
The fourth proportional to 205,373.18, 307,358.84 and 172,130.78 is: 257,608.69
Step by Step Solution
- Step 1: Write the proportion equation
205,373.18 : 307,358.84 = 172,130.78 : x - Step 2: Convert to fraction form
205,373.18/307,358.84 = 172,130.78/x - Step 3: Cross multiply
205,373.18x = 307,358.84 × 172,130.78 - Step 4: Simplify right side
205,373.18x = 52,905,916,869.10 - Step 5: Solve for x
x = 52,905,916,869.10/205,373.18 - Step 6: Final answer
x = 257,608.69
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.