Finding the Fourth Proportional to 509,178.44, 702,666.68 and 279,736.17
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Solution
The fourth proportional to 509,178.44, 702,666.68 and 279,736.17 is: 386,036.15
Step by Step Solution
- Step 1: Write the proportion equation
509,178.44 : 702,666.68 = 279,736.17 : x - Step 2: Convert to fraction form
509,178.44/702,666.68 = 279,736.17/x - Step 3: Cross multiply
509,178.44x = 702,666.68 × 279,736.17 - Step 4: Simplify right side
509,178.44x = 196,561,281,816.14 - Step 5: Solve for x
x = 196,561,281,816.14/509,178.44 - Step 6: Final answer
x = 386,036.15
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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.