Finding the Fourth Proportional to 391,181.58, 539,832.36 and 221,448.54
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Solution
The fourth proportional to 391,181.58, 539,832.36 and 221,448.54 is: 305,599.99
Step by Step Solution
- Step 1: Write the proportion equation
391,181.58 : 539,832.36 = 221,448.54 : x - Step 2: Convert to fraction form
391,181.58/539,832.36 = 221,448.54/x - Step 3: Cross multiply
391,181.58x = 539,832.36 × 221,448.54 - Step 4: Simplify right side
391,181.58x = 119,545,087,966.75 - Step 5: Solve for x
x = 119,545,087,966.75/391,181.58 - Step 6: Final answer
x = 305,599.99
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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.