Finding the Fourth Proportional to 391,477.44, 540,251.68 and 221,707.84
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Solution
The fourth proportional to 391,477.44, 540,251.68 and 221,707.84 is: 305,964.08
Step by Step Solution
- Step 1: Write the proportion equation
391,477.44 : 540,251.68 = 221,707.84 : x - Step 2: Convert to fraction form
391,477.44/540,251.68 = 221,707.84/x - Step 3: Cross multiply
391,477.44x = 540,251.68 × 221,707.84 - Step 4: Simplify right side
391,477.44x = 119,778,033,029.17 - Step 5: Solve for x
x = 119,778,033,029.17/391,477.44 - Step 6: Final answer
x = 305,964.08
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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.