Finding the Fourth Proportional to 382,656,208.13, 528,082,289.88 and 215,403,261.74
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Solution
The fourth proportional to 382,656,208.13, 528,082,289.88 and 215,403,261.74 is: 297,265,914.65
Step by Step Solution
- Step 1: Write the proportion equation
382,656,208.13 : 528,082,289.88 = 215,403,261.74 : x - Step 2: Convert to fraction form
382,656,208.13/528,082,289.88 = 215,403,261.74/x - Step 3: Cross multiply
382,656,208.13x = 528,082,289.88 × 215,403,261.74 - Step 4: Simplify right side
382,656,208.13x = 113,750,647,704,639,792 - Step 5: Solve for x
x = 113,750,647,704,639,792/382,656,208.13 - Step 6: Final answer
x = 297,265,914.65
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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.