Finding the Fourth Proportional to 400,840.67, 553,160.26 and 219,555.63
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Solution
The fourth proportional to 400,840.67, 553,160.26 and 219,555.63 is: 302,986.84
Step by Step Solution
- Step 1: Write the proportion equation
400,840.67 : 553,160.26 = 219,555.63 : x - Step 2: Convert to fraction form
400,840.67/553,160.26 = 219,555.63/x - Step 3: Cross multiply
400,840.67x = 553,160.26 × 219,555.63 - Step 4: Simplify right side
400,840.67x = 121,449,448,414.71 - Step 5: Solve for x
x = 121,449,448,414.71/400,840.67 - Step 6: Final answer
x = 302,986.84
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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.