Finding the Fourth Proportional to 280,316,367.97, 386,824,878.77 and 161,229,903.91
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Solution
The fourth proportional to 280,316,367.97, 386,824,878.77 and 161,229,903.91 is: 222,490,532.70
Step by Step Solution
- Step 1: Write the proportion equation
280,316,367.97 : 386,824,878.77 = 161,229,903.91 : x - Step 2: Convert to fraction form
280,316,367.97/386,824,878.77 = 161,229,903.91/x - Step 3: Cross multiply
280,316,367.97x = 386,824,878.77 × 161,229,903.91 - Step 4: Simplify right side
280,316,367.97x = 62,367,738,034,084,496 - Step 5: Solve for x
x = 62,367,738,034,084,496/280,316,367.97 - Step 6: Final answer
x = 222,490,532.70
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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.