Finding the Fourth Proportional to 384,201,947.17, 530,198,864.49 and 207,989,942.53
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Solution
The fourth proportional to 384,201,947.17, 530,198,864.49 and 207,989,942.53 is: 287,026,216.72
Step by Step Solution
- Step 1: Write the proportion equation
384,201,947.17 : 530,198,864.49 = 207,989,942.53 : x - Step 2: Convert to fraction form
384,201,947.17/530,198,864.49 = 207,989,942.53/x - Step 3: Cross multiply
384,201,947.17x = 530,198,864.49 × 207,989,942.53 - Step 4: Simplify right side
384,201,947.17x = 110,276,031,353,706,416 - Step 5: Solve for x
x = 110,276,031,353,706,416/384,201,947.17 - Step 6: Final answer
x = 287,026,216.72
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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.