Finding the Fourth Proportional to 307,267.70, 460,901.55 and 85,651.70
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Solution
The fourth proportional to 307,267.70, 460,901.55 and 85,651.70 is: 128,477.55
Step by Step Solution
- Step 1: Write the proportion equation
307,267.70 : 460,901.55 = 85,651.70 : x - Step 2: Convert to fraction form
307,267.70/460,901.55 = 85,651.70/x - Step 3: Cross multiply
307,267.70x = 460,901.55 × 85,651.70 - Step 4: Simplify right side
307,267.70x = 39,477,001,290.14 - Step 5: Solve for x
x = 39,477,001,290.14/307,267.70 - Step 6: Final answer
x = 128,477.55
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Similar ratio
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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.