Finding the Fourth Proportional to 289,683,446.20, 434,525,169.30 and 257,938,703.80
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Solution
The fourth proportional to 289,683,446.20, 434,525,169.30 and 257,938,703.80 is: 386,908,055.70
Step by Step Solution
- Step 1: Write the proportion equation
289,683,446.20 : 434,525,169.30 = 257,938,703.80 : x - Step 2: Convert to fraction form
289,683,446.20/434,525,169.30 = 257,938,703.80/x - Step 3: Cross multiply
289,683,446.20x = 434,525,169.30 × 257,938,703.80 - Step 4: Simplify right side
289,683,446.20x = 112,080,858,937,717,568 - Step 5: Solve for x
x = 112,080,858,937,717,568/289,683,446.20 - Step 6: Final answer
x = 386,908,055.70
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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.