Finding the Fourth Proportional to 185,789.40, 256,495.66 and 122,311.74
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Solution
The fourth proportional to 185,789.40, 256,495.66 and 122,311.74 is: 168,860.17
Step by Step Solution
- Step 1: Write the proportion equation
185,789.40 : 256,495.66 = 122,311.74 : x - Step 2: Convert to fraction form
185,789.40/256,495.66 = 122,311.74/x - Step 3: Cross multiply
185,789.40x = 256,495.66 × 122,311.74 - Step 4: Simplify right side
185,789.40x = 31,372,430,477.05 - Step 5: Solve for x
x = 31,372,430,477.05/185,789.40 - Step 6: Final answer
x = 168,860.17
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1.5x scale
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.