Finding the Fourth Proportional to 275,857,135.90, 413,551,342.99 and 128,390,331.17
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Solution
The fourth proportional to 275,857,135.90, 413,551,342.99 and 128,390,331.17 is: 192,476,419.75
Step by Step Solution
- Step 1: Write the proportion equation
275,857,135.90 : 413,551,342.99 = 128,390,331.17 : x - Step 2: Convert to fraction form
275,857,135.90/413,551,342.99 = 128,390,331.17/x - Step 3: Cross multiply
275,857,135.90x = 413,551,342.99 × 128,390,331.17 - Step 4: Simplify right side
275,857,135.90x = 53,095,993,880,433,008 - Step 5: Solve for x
x = 53,095,993,880,433,008/275,857,135.90 - Step 6: Final answer
x = 192,476,419.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.