Finding the Fourth Proportional to 216,771,628.80, 325,062,964.80 and 87,336,220.80
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Solution
The fourth proportional to 216,771,628.80, 325,062,964.80 and 87,336,220.80 is: 130,966,266.32
Step by Step Solution
- Step 1: Write the proportion equation
216,771,628.80 : 325,062,964.80 = 87,336,220.80 : x - Step 2: Convert to fraction form
216,771,628.80/325,062,964.80 = 87,336,220.80/x - Step 3: Cross multiply
216,771,628.80x = 325,062,964.80 × 87,336,220.80 - Step 4: Simplify right side
216,771,628.80x = 28,389,770,867,675,428 - Step 5: Solve for x
x = 28,389,770,867,675,428/216,771,628.80 - Step 6: Final answer
x = 130,966,266.32
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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.