Finding the Fourth Proportional to 386,668,761.84, 533,605,110.48 and 210,456,336.96
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Solution
The fourth proportional to 386,668,761.84, 533,605,110.48 and 210,456,336.96 is: 290,430,952.84
Step by Step Solution
- Step 1: Write the proportion equation
386,668,761.84 : 533,605,110.48 = 210,456,336.96 : x - Step 2: Convert to fraction form
386,668,761.84/533,605,110.48 = 210,456,336.96/x - Step 3: Cross multiply
386,668,761.84x = 533,605,110.48 × 210,456,336.96 - Step 4: Simplify right side
386,668,761.84x = 112,300,576,934,756,912 - Step 5: Solve for x
x = 112,300,576,934,756,912/386,668,761.84 - Step 6: Final answer
x = 290,430,952.84
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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.