Finding the Fourth Proportional to 318,896.40, 478,171.80 and 131,926.80
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Solution
The fourth proportional to 318,896.40, 478,171.80 and 131,926.80 is: 197,818.71
Step by Step Solution
- Step 1: Write the proportion equation
318,896.40 : 478,171.80 = 131,926.80 : x - Step 2: Convert to fraction form
318,896.40/478,171.80 = 131,926.80/x - Step 3: Cross multiply
318,896.40x = 478,171.80 × 131,926.80 - Step 4: Simplify right side
318,896.40x = 63,083,675,424.24 - Step 5: Solve for x
x = 63,083,675,424.24/318,896.40 - Step 6: Final answer
x = 197,818.71
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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.