Finding the Fourth Proportional to 210,146,449.80, 315,219,674.70 and 129,524,881.80
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Solution
The fourth proportional to 210,146,449.80, 315,219,674.70 and 129,524,881.80 is: 194,287,322.70
Step by Step Solution
- Step 1: Write the proportion equation
210,146,449.80 : 315,219,674.70 = 129,524,881.80 : x - Step 2: Convert to fraction form
210,146,449.80/315,219,674.70 = 129,524,881.80/x - Step 3: Cross multiply
210,146,449.80x = 315,219,674.70 × 129,524,881.80 - Step 4: Simplify right side
210,146,449.80x = 40,828,791,106,551,944 - Step 5: Solve for x
x = 40,828,791,106,551,944/210,146,449.80 - Step 6: Final answer
x = 194,287,322.70
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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.