Finding the Fourth Proportional to 315,523,457.70, 475,438,863.93 and 259,275,742.26
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Solution
The fourth proportional to 315,523,457.70, 475,438,863.93 and 259,275,742.26 is: 390,683,359.15
Step by Step Solution
- Step 1: Write the proportion equation
315,523,457.70 : 475,438,863.93 = 259,275,742.26 : x - Step 2: Convert to fraction form
315,523,457.70/475,438,863.93 = 259,275,742.26/x - Step 3: Cross multiply
315,523,457.70x = 475,438,863.93 × 259,275,742.26 - Step 4: Simplify right side
315,523,457.70x = 123,269,764,344,701,888 - Step 5: Solve for x
x = 123,269,764,344,701,888/315,523,457.70 - Step 6: Final answer
x = 390,683,359.15
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.