Finding the Fourth Proportional to 280,409,987.36, 420,239,005.04 and 218,236,376.12
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Solution
The fourth proportional to 280,409,987.36, 420,239,005.04 and 218,236,376.12 is: 327,061,951.06
Step by Step Solution
- Step 1: Write the proportion equation
280,409,987.36 : 420,239,005.04 = 218,236,376.12 : x - Step 2: Convert to fraction form
280,409,987.36/420,239,005.04 = 218,236,376.12/x - Step 3: Cross multiply
280,409,987.36x = 420,239,005.04 × 218,236,376.12 - Step 4: Simplify right side
280,409,987.36x = 91,711,437,562,648,416 - Step 5: Solve for x
x = 91,711,437,562,648,416/280,409,987.36 - Step 6: Final answer
x = 327,061,951.06
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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.