Finding the Fourth Proportional to 415,358,478.20, 573,371,192.34 and 258,802,936.13
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Solution
The fourth proportional to 415,358,478.20, 573,371,192.34 and 258,802,936.13 is: 357,258,021.34
Step by Step Solution
- Step 1: Write the proportion equation
415,358,478.20 : 573,371,192.34 = 258,802,936.13 : x - Step 2: Convert to fraction form
415,358,478.20/573,371,192.34 = 258,802,936.13/x - Step 3: Cross multiply
415,358,478.20x = 573,371,192.34 × 258,802,936.13 - Step 4: Simplify right side
415,358,478.20x = 148,390,148,067,084,128 - Step 5: Solve for x
x = 148,390,148,067,084,128/415,358,478.20 - Step 6: Final answer
x = 357,258,021.34
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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.