Finding the Fourth Proportional to 231,143,468.49, 318,977,909.75 and 126,719,297.80
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Solution
The fourth proportional to 231,143,468.49, 318,977,909.75 and 126,719,297.80 is: 174,872,588.88
Step by Step Solution
- Step 1: Write the proportion equation
231,143,468.49 : 318,977,909.75 = 126,719,297.80 : x - Step 2: Convert to fraction form
231,143,468.49/318,977,909.75 = 126,719,297.80/x - Step 3: Cross multiply
231,143,468.49x = 318,977,909.75 × 126,719,297.80 - Step 4: Simplify right side
231,143,468.49x = 40,420,656,736,751,128 - Step 5: Solve for x
x = 40,420,656,736,751,128/231,143,468.49 - Step 6: Final answer
x = 174,872,588.88
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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.