Finding the Fourth Proportional to 272,574.11, 408,944.91 and 139,547.75
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Solution
The fourth proportional to 272,574.11, 408,944.91 and 139,547.75 is: 209,364.50
Step by Step Solution
- Step 1: Write the proportion equation
272,574.11 : 408,944.91 = 139,547.75 : x - Step 2: Convert to fraction form
272,574.11/408,944.91 = 139,547.75/x - Step 3: Cross multiply
272,574.11x = 408,944.91 × 139,547.75 - Step 4: Simplify right side
272,574.11x = 57,067,340,019.73 - Step 5: Solve for x
x = 57,067,340,019.73/272,574.11 - Step 6: Final answer
x = 209,364.50
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1.5x scale
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.