Finding the Fourth Proportional to 305,319.87, 421,306.47 and 176,257.85
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Solution
The fourth proportional to 305,319.87, 421,306.47 and 176,257.85 is: 243,215.65
Step by Step Solution
- Step 1: Write the proportion equation
305,319.87 : 421,306.47 = 176,257.85 : x - Step 2: Convert to fraction form
305,319.87/421,306.47 = 176,257.85/x - Step 3: Cross multiply
305,319.87x = 421,306.47 × 176,257.85 - Step 4: Simplify right side
305,319.87x = 74,258,570,486.76 - Step 5: Solve for x
x = 74,258,570,486.76/305,319.87 - Step 6: Final answer
x = 243,215.65
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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.