Finding the Fourth Proportional to 309,629.70, 432,956.70 and 309,629.70
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Solution
The fourth proportional to 309,629.70, 432,956.70 and 309,629.70 is: 432,956.70
Step by Step Solution
- Step 1: Write the proportion equation
309,629.70 : 432,956.70 = 309,629.70 : x - Step 2: Convert to fraction form
309,629.70/432,956.70 = 309,629.70/x - Step 3: Cross multiply
309,629.70x = 432,956.70 × 309,629.70 - Step 4: Simplify right side
309,629.70x = 134,056,253,133.99 - Step 5: Solve for x
x = 134,056,253,133.99/309,629.70 - Step 6: Final answer
x = 432,956.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.