Finding the Fourth Proportional to 278,969.16, 418,458.48 and 121,197.63
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Solution
The fourth proportional to 278,969.16, 418,458.48 and 121,197.63 is: 181,798.50
Step by Step Solution
- Step 1: Write the proportion equation
278,969.16 : 418,458.48 = 121,197.63 : x - Step 2: Convert to fraction form
278,969.16/418,458.48 = 121,197.63/x - Step 3: Cross multiply
278,969.16x = 418,458.48 × 121,197.63 - Step 4: Simplify right side
278,969.16x = 50,716,176,029.40 - Step 5: Solve for x
x = 50,716,176,029.40/278,969.16 - Step 6: Final answer
x = 181,798.50
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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.