Finding the Fourth Proportional to 307,513.40, 461,270.10 and 305,439.80
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Solution
The fourth proportional to 307,513.40, 461,270.10 and 305,439.80 is: 458,159.70
Step by Step Solution
- Step 1: Write the proportion equation
307,513.40 : 461,270.10 = 305,439.80 : x - Step 2: Convert to fraction form
307,513.40/461,270.10 = 305,439.80/x - Step 3: Cross multiply
307,513.40x = 461,270.10 × 305,439.80 - Step 4: Simplify right side
307,513.40x = 140,890,247,089.98 - Step 5: Solve for x
x = 140,890,247,089.98/307,513.40 - Step 6: Final answer
x = 458,159.70
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1.5x scale
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.