Finding the Fourth Proportional to 382,805,160.76, 528,201,438.78 and 215,515,407.16
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Solution
The fourth proportional to 382,805,160.76, 528,201,438.78 and 215,515,407.16 is: 297,372,031.02
Step by Step Solution
- Step 1: Write the proportion equation
382,805,160.76 : 528,201,438.78 = 215,515,407.16 : x - Step 2: Convert to fraction form
382,805,160.76/528,201,438.78 = 215,515,407.16/x - Step 3: Cross multiply
382,805,160.76x = 528,201,438.78 × 215,515,407.16 - Step 4: Simplify right side
382,805,160.76x = 113,835,548,141,169,504 - Step 5: Solve for x
x = 113,835,548,141,169,504/382,805,160.76 - Step 6: Final answer
x = 297,372,031.02
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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.