Finding the Fourth Proportional to 289,656,961.35, 399,723,818.60 and 157,498,006.92
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Solution
The fourth proportional to 289,656,961.35, 399,723,818.60 and 157,498,006.92 is: 217,345,733.57
Step by Step Solution
- Step 1: Write the proportion equation
289,656,961.35 : 399,723,818.60 = 157,498,006.92 : x - Step 2: Convert to fraction form
289,656,961.35/399,723,818.60 = 157,498,006.92/x - Step 3: Cross multiply
289,656,961.35x = 399,723,818.60 × 157,498,006.92 - Step 4: Simplify right side
289,656,961.35x = 62,955,704,747,164,136 - Step 5: Solve for x
x = 62,955,704,747,164,136/289,656,961.35 - Step 6: Final answer
x = 217,345,733.57
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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.