Finding the Fourth Proportional to 392,873.97, 542,169.86 and 223,109.31
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Solution
The fourth proportional to 392,873.97, 542,169.86 and 223,109.31 is: 307,892.99
Step by Step Solution
- Step 1: Write the proportion equation
392,873.97 : 542,169.86 = 223,109.31 : x - Step 2: Convert to fraction form
392,873.97/542,169.86 = 223,109.31/x - Step 3: Cross multiply
392,873.97x = 542,169.86 × 223,109.31 - Step 4: Simplify right side
392,873.97x = 120,963,141,214.32 - Step 5: Solve for x
x = 120,963,141,214.32/392,873.97 - Step 6: Final answer
x = 307,892.99
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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.