Finding the Fourth Proportional to 313,037.11, 431,988.15 and 169,795.09
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Solution
The fourth proportional to 313,037.11, 431,988.15 and 169,795.09 is: 234,315.56
Step by Step Solution
- Step 1: Write the proportion equation
313,037.11 : 431,988.15 = 169,795.09 : x - Step 2: Convert to fraction form
313,037.11/431,988.15 = 169,795.09/x - Step 3: Cross multiply
313,037.11x = 431,988.15 × 169,795.09 - Step 4: Simplify right side
313,037.11x = 73,349,466,808.18 - Step 5: Solve for x
x = 73,349,466,808.18/313,037.11 - Step 6: Final answer
x = 234,315.56
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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.