Finding the Fourth Proportional to 191,644,813.70, 287,467,220.55 and 53,470,153.70
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Solution
The fourth proportional to 191,644,813.70, 287,467,220.55 and 53,470,153.70 is: 80,205,230.55
Step by Step Solution
- Step 1: Write the proportion equation
191,644,813.70 : 287,467,220.55 = 53,470,153.70 : x - Step 2: Convert to fraction form
191,644,813.70/287,467,220.55 = 53,470,153.70/x - Step 3: Cross multiply
191,644,813.70x = 287,467,220.55 × 53,470,153.70 - Step 4: Simplify right side
191,644,813.70x = 15,370,916,466,520,300 - Step 5: Solve for x
x = 15,370,916,466,520,300/191,644,813.70 - Step 6: Final answer
x = 80,205,230.55
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1.5x scale
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.