Finding the Fourth Proportional to 421,206,959.80, 581,295,044.46 and 235,585,130.68
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Solution
The fourth proportional to 421,206,959.80, 581,295,044.46 and 235,585,130.68 is: 325,123,946.38
Step by Step Solution
- Step 1: Write the proportion equation
421,206,959.80 : 581,295,044.46 = 235,585,130.68 : x - Step 2: Convert to fraction form
421,206,959.80/581,295,044.46 = 235,585,130.68/x - Step 3: Cross multiply
421,206,959.80x = 581,295,044.46 × 235,585,130.68 - Step 4: Simplify right side
421,206,959.80x = 136,944,469,012,745,520 - Step 5: Solve for x
x = 136,944,469,012,745,520/421,206,959.80 - Step 6: Final answer
x = 325,123,946.38
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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.