Finding the Fourth Proportional to 421,206,963.80, 581,295,049.98 and 235,585,134.68
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Solution
The fourth proportional to 421,206,963.80, 581,295,049.98 and 235,585,134.68 is: 325,123,951.90
Step by Step Solution
- Step 1: Write the proportion equation
421,206,963.80 : 581,295,049.98 = 235,585,134.68 : x - Step 2: Convert to fraction form
421,206,963.80/581,295,049.98 = 235,585,134.68/x - Step 3: Cross multiply
421,206,963.80x = 581,295,049.98 × 235,585,134.68 - Step 4: Simplify right side
421,206,963.80x = 136,944,472,638,355,632 - Step 5: Solve for x
x = 136,944,472,638,355,632/421,206,963.80 - Step 6: Final answer
x = 325,123,951.90
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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.