Finding the Fourth Proportional to 280,409,798.87, 420,238,722.24 and 218,236,188.74
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Solution
The fourth proportional to 280,409,798.87, 420,238,722.24 and 218,236,188.74 is: 327,061,670.00
Step by Step Solution
- Step 1: Write the proportion equation
280,409,798.87 : 420,238,722.24 = 218,236,188.74 : x - Step 2: Convert to fraction form
280,409,798.87/420,238,722.24 = 218,236,188.74/x - Step 3: Cross multiply
280,409,798.87x = 420,238,722.24 × 218,236,188.74 - Step 4: Simplify right side
280,409,798.87x = 91,711,297,102,625,088 - Step 5: Solve for x
x = 91,711,297,102,625,088/280,409,798.87 - Step 6: Final answer
x = 327,061,670.00
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.