Finding the Fourth Proportional to 266,251,214.40, 399,376,821.60 and 193,124,932.80
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Solution
The fourth proportional to 266,251,214.40, 399,376,821.60 and 193,124,932.80 is: 289,687,399.20
Step by Step Solution
- Step 1: Write the proportion equation
266,251,214.40 : 399,376,821.60 = 193,124,932.80 : x - Step 2: Convert to fraction form
266,251,214.40/399,376,821.60 = 193,124,932.80/x - Step 3: Cross multiply
266,251,214.40x = 399,376,821.60 × 193,124,932.80 - Step 4: Simplify right side
266,251,214.40x = 77,129,621,833,377,600 - Step 5: Solve for x
x = 77,129,621,833,377,600/266,251,214.40 - Step 6: Final answer
x = 289,687,399.20
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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.