Finding the Fourth Proportional to 279,516.39, 385,728.78 and 152,191.99
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Solution
The fourth proportional to 279,516.39, 385,728.78 and 152,191.99 is: 210,022.86
Step by Step Solution
- Step 1: Write the proportion equation
279,516.39 : 385,728.78 = 152,191.99 : x - Step 2: Convert to fraction form
279,516.39/385,728.78 = 152,191.99/x - Step 3: Cross multiply
279,516.39x = 385,728.78 × 152,191.99 - Step 4: Simplify right side
279,516.39x = 58,704,830,628.47 - Step 5: Solve for x
x = 58,704,830,628.47/279,516.39 - Step 6: Final answer
x = 210,022.86
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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.