Finding the Fourth Proportional to 311,950,311.61, 430,504,881.39 and 172,721,085.68
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Solution
The fourth proportional to 311,950,311.61, 430,504,881.39 and 172,721,085.68 is: 238,362,546.01
Step by Step Solution
- Step 1: Write the proportion equation
311,950,311.61 : 430,504,881.39 = 172,721,085.68 : x - Step 2: Convert to fraction form
311,950,311.61/430,504,881.39 = 172,721,085.68/x - Step 3: Cross multiply
311,950,311.61x = 430,504,881.39 × 172,721,085.68 - Step 4: Simplify right side
311,950,311.61x = 74,357,270,504,220,432 - Step 5: Solve for x
x = 74,357,270,504,220,432/311,950,311.61 - Step 6: Final answer
x = 238,362,546.01
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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.