Finding the Fourth Proportional to 311,798.95, 430,272.07 and 197,139.31
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Solution
The fourth proportional to 311,798.95, 430,272.07 and 197,139.31 is: 272,045.62
Step by Step Solution
- Step 1: Write the proportion equation
311,798.95 : 430,272.07 = 197,139.31 : x - Step 2: Convert to fraction form
311,798.95/430,272.07 = 197,139.31/x - Step 3: Cross multiply
311,798.95x = 430,272.07 × 197,139.31 - Step 4: Simplify right side
311,798.95x = 84,823,538,992.07 - Step 5: Solve for x
x = 84,823,538,992.07/311,798.95 - Step 6: Final answer
x = 272,045.62
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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.