Finding the Fourth Proportional to 285,308.84, 393,728.10 and 157,992.68
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Solution
The fourth proportional to 285,308.84, 393,728.10 and 157,992.68 is: 218,030.95
Step by Step Solution
- Step 1: Write the proportion equation
285,308.84 : 393,728.10 = 157,992.68 : x - Step 2: Convert to fraction form
285,308.84/393,728.10 = 157,992.68/x - Step 3: Cross multiply
285,308.84x = 393,728.10 × 157,992.68 - Step 4: Simplify right side
285,308.84x = 62,206,157,710.31 - Step 5: Solve for x
x = 62,206,157,710.31/285,308.84 - Step 6: Final answer
x = 218,030.95
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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.