Finding the Fourth Proportional to 239,215,585.50, 330,117,742.08 and 129,207,298.50
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Solution
The fourth proportional to 239,215,585.50, 330,117,742.08 and 129,207,298.50 is: 178,306,198.37
Step by Step Solution
- Step 1: Write the proportion equation
239,215,585.50 : 330,117,742.08 = 129,207,298.50 : x - Step 2: Convert to fraction form
239,215,585.50/330,117,742.08 = 129,207,298.50/x - Step 3: Cross multiply
239,215,585.50x = 330,117,742.08 × 129,207,298.50 - Step 4: Simplify right side
239,215,585.50x = 42,653,621,641,076,568 - Step 5: Solve for x
x = 42,653,621,641,076,568/239,215,585.50 - Step 6: Final answer
x = 178,306,198.37
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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.