Finding the Fourth Proportional to 368,816.12, 508,939.98 and 207,680.12
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Solution
The fourth proportional to 368,816.12, 508,939.98 and 207,680.12 is: 286,583.78
Step by Step Solution
- Step 1: Write the proportion equation
368,816.12 : 508,939.98 = 207,680.12 : x - Step 2: Convert to fraction form
368,816.12/508,939.98 = 207,680.12/x - Step 3: Cross multiply
368,816.12x = 508,939.98 × 207,680.12 - Step 4: Simplify right side
368,816.12x = 105,696,716,119.20 - Step 5: Solve for x
x = 105,696,716,119.20/368,816.12 - Step 6: Final answer
x = 286,583.78
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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.