Finding the Fourth Proportional to 210,085,640.84, 289,966,557.30 and 123,193,506.44
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Solution
The fourth proportional to 210,085,640.84, 289,966,557.30 and 123,193,506.44 is: 170,035,404.62
Step by Step Solution
- Step 1: Write the proportion equation
210,085,640.84 : 289,966,557.30 = 123,193,506.44 : x - Step 2: Convert to fraction form
210,085,640.84/289,966,557.30 = 123,193,506.44/x - Step 3: Cross multiply
210,085,640.84x = 289,966,557.30 × 123,193,506.44 - Step 4: Simplify right side
210,085,640.84x = 35,721,996,944,122,180 - Step 5: Solve for x
x = 35,721,996,944,122,180/210,085,640.84 - Step 6: Final answer
x = 170,035,404.62
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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.